fenv.html 64 KB

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  23. <h1 class="title">std/fenv</h1>
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  48. <ul class="simple simple-toc" id="toc-list">
  49. <li>
  50. <details open>
  51. <summary><a class="reference reference-toplevel" href="#7" id="57">Types</a></summary>
  52. <ul class="simple simple-toc-section">
  53. <li><a class="reference" href="#Tfenv" title="Tfenv {.importc: &quot;fenv_t&quot;, header: &quot;&lt;fenv.h&gt;&quot;, final, pure.} = object">Tfenv</a></li>
  54. <li><a class="reference" href="#Tfexcept" title="Tfexcept {.importc: &quot;fexcept_t&quot;, header: &quot;&lt;fenv.h&gt;&quot;, final, pure.} = object">Tfexcept</a></li>
  55. </ul>
  56. </details>
  57. </li>
  58. <li>
  59. <details open>
  60. <summary><a class="reference reference-toplevel" href="#8" id="58">Vars</a></summary>
  61. <ul class="simple simple-toc-section">
  62. <li><a class="reference" href="#FE_ALL_EXCEPT" title="FE_ALL_EXCEPT {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_ALL_EXCEPT</a></li>
  63. <li><a class="reference" href="#FE_DFL_ENV" title="FE_DFL_ENV {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_DFL_ENV</a></li>
  64. <li><a class="reference" href="#FE_DIVBYZERO" title="FE_DIVBYZERO {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_DIVBYZERO</a></li>
  65. <li><a class="reference" href="#FE_DOWNWARD" title="FE_DOWNWARD {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_DOWNWARD</a></li>
  66. <li><a class="reference" href="#FE_INEXACT" title="FE_INEXACT {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_INEXACT</a></li>
  67. <li><a class="reference" href="#FE_INVALID" title="FE_INVALID {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_INVALID</a></li>
  68. <li><a class="reference" href="#FE_OVERFLOW" title="FE_OVERFLOW {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_OVERFLOW</a></li>
  69. <li><a class="reference" href="#FE_TONEAREST" title="FE_TONEAREST {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_TONEAREST</a></li>
  70. <li><a class="reference" href="#FE_TOWARDZERO" title="FE_TOWARDZERO {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_TOWARDZERO</a></li>
  71. <li><a class="reference" href="#FE_UNDERFLOW" title="FE_UNDERFLOW {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_UNDERFLOW</a></li>
  72. <li><a class="reference" href="#FE_UPWARD" title="FE_UPWARD {.importc, header: &quot;&lt;fenv.h&gt;&quot;.}: cint">FE_UPWARD</a></li>
  73. </ul>
  74. </details>
  75. </li>
  76. <li>
  77. <details open>
  78. <summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
  79. <ul class="simple simple-toc-section">
  80. <ul class="simple nested-toc-section">feclearexcept
  81. <li><a class="reference" href="#feclearexcept%2Ccint" title="feclearexcept(excepts: cint): cint">feclearexcept(excepts: cint): cint</a></li>
  82. </ul>
  83. <ul class="simple nested-toc-section">fegetenv
  84. <li><a class="reference" href="#fegetenv%2Cptr.Tfenv" title="fegetenv(envp: ptr Tfenv): cint">fegetenv(envp: ptr Tfenv): cint</a></li>
  85. </ul>
  86. <ul class="simple nested-toc-section">fegetexceptflag
  87. <li><a class="reference" href="#fegetexceptflag%2Cptr.Tfexcept%2Ccint" title="fegetexceptflag(flagp: ptr Tfexcept; excepts: cint): cint">fegetexceptflag(flagp: ptr Tfexcept; excepts: cint): cint</a></li>
  88. </ul>
  89. <ul class="simple nested-toc-section">fegetround
  90. <li><a class="reference" href="#fegetround" title="fegetround(): cint">fegetround(): cint</a></li>
  91. </ul>
  92. <ul class="simple nested-toc-section">feholdexcept
  93. <li><a class="reference" href="#feholdexcept%2Cptr.Tfenv" title="feholdexcept(envp: ptr Tfenv): cint">feholdexcept(envp: ptr Tfenv): cint</a></li>
  94. </ul>
  95. <ul class="simple nested-toc-section">feraiseexcept
  96. <li><a class="reference" href="#feraiseexcept%2Ccint" title="feraiseexcept(excepts: cint): cint">feraiseexcept(excepts: cint): cint</a></li>
  97. </ul>
  98. <ul class="simple nested-toc-section">fesetenv
  99. <li><a class="reference" href="#fesetenv%2Cptr.Tfenv" title="fesetenv(a1: ptr Tfenv): cint">fesetenv(a1: ptr Tfenv): cint</a></li>
  100. </ul>
  101. <ul class="simple nested-toc-section">fesetexceptflag
  102. <li><a class="reference" href="#fesetexceptflag%2Cptr.Tfexcept%2Ccint" title="fesetexceptflag(flagp: ptr Tfexcept; excepts: cint): cint">fesetexceptflag(flagp: ptr Tfexcept; excepts: cint): cint</a></li>
  103. </ul>
  104. <ul class="simple nested-toc-section">fesetround
  105. <li><a class="reference" href="#fesetround%2Ccint" title="fesetround(roundingDirection: cint): cint">fesetround(roundingDirection: cint): cint</a></li>
  106. </ul>
  107. <ul class="simple nested-toc-section">fetestexcept
  108. <li><a class="reference" href="#fetestexcept%2Ccint" title="fetestexcept(excepts: cint): cint">fetestexcept(excepts: cint): cint</a></li>
  109. </ul>
  110. <ul class="simple nested-toc-section">feupdateenv
  111. <li><a class="reference" href="#feupdateenv%2Cptr.Tfenv" title="feupdateenv(envp: ptr Tfenv): cint">feupdateenv(envp: ptr Tfenv): cint</a></li>
  112. </ul>
  113. </ul>
  114. </details>
  115. </li>
  116. <li>
  117. <details open>
  118. <summary><a class="reference reference-toplevel" href="#18" id="68">Templates</a></summary>
  119. <ul class="simple simple-toc-section">
  120. <ul class="simple nested-toc-section">digits
  121. <li><a class="reference" href="#digits.t%2Ctypedesc%5Bfloat32%5D" title="digits(T: typedesc[float32]): int">digits(T: typedesc[float32]): int</a></li>
  122. <li><a class="reference" href="#digits.t%2Ctypedesc%5Bfloat64%5D" title="digits(T: typedesc[float64]): int">digits(T: typedesc[float64]): int</a></li>
  123. </ul>
  124. <ul class="simple nested-toc-section">epsilon
  125. <li><a class="reference" href="#epsilon.t%2Ctypedesc%5Bfloat32%5D" title="epsilon(T: typedesc[float32]): float32">epsilon(T: typedesc[float32]): float32</a></li>
  126. <li><a class="reference" href="#epsilon.t%2Ctypedesc%5Bfloat64%5D" title="epsilon(T: typedesc[float64]): float64">epsilon(T: typedesc[float64]): float64</a></li>
  127. </ul>
  128. <ul class="simple nested-toc-section">fpRadix
  129. <li><a class="reference" href="#fpRadix.t" title="fpRadix(): int">fpRadix(): int</a></li>
  130. </ul>
  131. <ul class="simple nested-toc-section">mantissaDigits
  132. <li><a class="reference" href="#mantissaDigits.t%2Ctypedesc%5Bfloat32%5D" title="mantissaDigits(T: typedesc[float32]): int">mantissaDigits(T: typedesc[float32]): int</a></li>
  133. <li><a class="reference" href="#mantissaDigits.t%2Ctypedesc%5Bfloat64%5D" title="mantissaDigits(T: typedesc[float64]): int">mantissaDigits(T: typedesc[float64]): int</a></li>
  134. </ul>
  135. <ul class="simple nested-toc-section">max10Exponent
  136. <li><a class="reference" href="#max10Exponent.t%2Ctypedesc%5Bfloat32%5D" title="max10Exponent(T: typedesc[float32]): int">max10Exponent(T: typedesc[float32]): int</a></li>
  137. <li><a class="reference" href="#max10Exponent.t%2Ctypedesc%5Bfloat64%5D" title="max10Exponent(T: typedesc[float64]): int">max10Exponent(T: typedesc[float64]): int</a></li>
  138. </ul>
  139. <ul class="simple nested-toc-section">maxExponent
  140. <li><a class="reference" href="#maxExponent.t%2Ctypedesc%5Bfloat32%5D" title="maxExponent(T: typedesc[float32]): int">maxExponent(T: typedesc[float32]): int</a></li>
  141. <li><a class="reference" href="#maxExponent.t%2Ctypedesc%5Bfloat64%5D" title="maxExponent(T: typedesc[float64]): int">maxExponent(T: typedesc[float64]): int</a></li>
  142. </ul>
  143. <ul class="simple nested-toc-section">maximumPositiveValue
  144. <li><a class="reference" href="#maximumPositiveValue.t%2Ctypedesc%5Bfloat32%5D" title="maximumPositiveValue(T: typedesc[float32]): float32">maximumPositiveValue(T: typedesc[float32]): float32</a></li>
  145. <li><a class="reference" href="#maximumPositiveValue.t%2Ctypedesc%5Bfloat64%5D" title="maximumPositiveValue(T: typedesc[float64]): float64">maximumPositiveValue(T: typedesc[float64]): float64</a></li>
  146. </ul>
  147. <ul class="simple nested-toc-section">min10Exponent
  148. <li><a class="reference" href="#min10Exponent.t%2Ctypedesc%5Bfloat32%5D" title="min10Exponent(T: typedesc[float32]): int">min10Exponent(T: typedesc[float32]): int</a></li>
  149. <li><a class="reference" href="#min10Exponent.t%2Ctypedesc%5Bfloat64%5D" title="min10Exponent(T: typedesc[float64]): int">min10Exponent(T: typedesc[float64]): int</a></li>
  150. </ul>
  151. <ul class="simple nested-toc-section">minExponent
  152. <li><a class="reference" href="#minExponent.t%2Ctypedesc%5Bfloat32%5D" title="minExponent(T: typedesc[float32]): int">minExponent(T: typedesc[float32]): int</a></li>
  153. <li><a class="reference" href="#minExponent.t%2Ctypedesc%5Bfloat64%5D" title="minExponent(T: typedesc[float64]): int">minExponent(T: typedesc[float64]): int</a></li>
  154. </ul>
  155. <ul class="simple nested-toc-section">minimumPositiveValue
  156. <li><a class="reference" href="#minimumPositiveValue.t%2Ctypedesc%5Bfloat32%5D" title="minimumPositiveValue(T: typedesc[float32]): float32">minimumPositiveValue(T: typedesc[float32]): float32</a></li>
  157. <li><a class="reference" href="#minimumPositiveValue.t%2Ctypedesc%5Bfloat64%5D" title="minimumPositiveValue(T: typedesc[float64]): float64">minimumPositiveValue(T: typedesc[float64]): float64</a></li>
  158. </ul>
  159. </ul>
  160. </details>
  161. </li>
  162. </ul>
  163. </div>
  164. <div class="nine columns" id="content">
  165. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  166. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  167. <div id="tocRoot"></div>
  168. <p class="module-desc">Floating-point environment. Handling of floating-point rounding and exceptions (overflow, division by zero, etc.). The types, vars and procs are bindings for the C standard library <a class="reference external" href="https://en.cppreference.com/w/c/numeric/fenv">&lt;fenv.h&gt;</a> header.</p>
  169. <div class="section" id="7">
  170. <h1><a class="toc-backref" href="#7">Types</a></h1>
  171. <dl class="item">
  172. <div id="Tfenv">
  173. <dt><pre><a href="fenv.html#Tfenv"><span class="Identifier">Tfenv</span></a> {.<span class="Identifier">importc</span><span class="Other">:</span> <span class="StringLit">&quot;fenv_t&quot;</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span class="Identifier">final</span><span class="Other">,</span> <span class="Identifier">pure</span>.} <span class="Other">=</span> <span class="Keyword">object</span></pre></dt>
  174. <dd>
  175. Represents the entire floating-point environment. The floating-point environment refers collectively to any floating-point status flags and control modes supported by the implementation.
  176. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L45" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  177. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L45" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  178. </dd>
  179. </div>
  180. <div id="Tfexcept">
  181. <dt><pre><a href="fenv.html#Tfexcept"><span class="Identifier">Tfexcept</span></a> {.<span class="Identifier">importc</span><span class="Other">:</span> <span class="StringLit">&quot;fexcept_t&quot;</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span class="Identifier">final</span><span class="Other">,</span> <span class="Identifier">pure</span>.} <span class="Other">=</span> <span class="Keyword">object</span></pre></dt>
  182. <dd>
  183. Represents the floating-point status flags collectively, including any status the implementation associates with the flags. A floating-point status flag is a system variable whose value is set (but never cleared) when a floating-point exception is raised, which occurs as a side effect of exceptional floating-point arithmetic to provide auxiliary information. A floating-point control mode is a system variable whose value may be set by the user to affect the subsequent behavior of floating-point arithmetic.
  184. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L50" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  185. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L50" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  186. </dd>
  187. </div>
  188. </dl>
  189. </div>
  190. <div class="section" id="8">
  191. <h1><a class="toc-backref" href="#8">Vars</a></h1>
  192. <dl class="item">
  193. <div id="FE_ALL_EXCEPT">
  194. <dt><pre><a href="fenv.html#FE_ALL_EXCEPT"><span class="Identifier">FE_ALL_EXCEPT</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  195. <dd>
  196. bitwise OR of all supported exceptions
  197. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L29" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  198. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L29" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  199. </dd>
  200. </div>
  201. <div id="FE_DFL_ENV">
  202. <dt><pre><a href="fenv.html#FE_DFL_ENV"><span class="Identifier">FE_DFL_ENV</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  203. <dd>
  204. macro of type pointer to <tt class="docutils literal"><span class="pre"><span class="Identifier">fenv_t</span></span></tt> to be used as the argument to functions taking an argument of type <tt class="docutils literal"><span class="pre"><span class="Identifier">fenv_t</span></span></tt>; in this case the default environment will be used
  205. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L39" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  206. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L39" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  207. </dd>
  208. </div>
  209. <div id="FE_DIVBYZERO">
  210. <dt><pre><a href="fenv.html#FE_DIVBYZERO"><span class="Identifier">FE_DIVBYZERO</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  211. <dd>
  212. division by zero
  213. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L19" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  214. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L19" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  215. </dd>
  216. </div>
  217. <div id="FE_DOWNWARD">
  218. <dt><pre><a href="fenv.html#FE_DOWNWARD"><span class="Identifier">FE_DOWNWARD</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  219. <dd>
  220. round toward -Inf
  221. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L31" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  222. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L31" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  223. </dd>
  224. </div>
  225. <div id="FE_INEXACT">
  226. <dt><pre><a href="fenv.html#FE_INEXACT"><span class="Identifier">FE_INEXACT</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  227. <dd>
  228. inexact result
  229. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L21" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  230. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L21" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  231. </dd>
  232. </div>
  233. <div id="FE_INVALID">
  234. <dt><pre><a href="fenv.html#FE_INVALID"><span class="Identifier">FE_INVALID</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  235. <dd>
  236. invalid operation
  237. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L23" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  238. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L23" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  239. </dd>
  240. </div>
  241. <div id="FE_OVERFLOW">
  242. <dt><pre><a href="fenv.html#FE_OVERFLOW"><span class="Identifier">FE_OVERFLOW</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  243. <dd>
  244. result not representable due to overflow
  245. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L25" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  246. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L25" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  247. </dd>
  248. </div>
  249. <div id="FE_TONEAREST">
  250. <dt><pre><a href="fenv.html#FE_TONEAREST"><span class="Identifier">FE_TONEAREST</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  251. <dd>
  252. round to nearest
  253. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L33" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  254. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L33" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  255. </dd>
  256. </div>
  257. <div id="FE_TOWARDZERO">
  258. <dt><pre><a href="fenv.html#FE_TOWARDZERO"><span class="Identifier">FE_TOWARDZERO</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  259. <dd>
  260. round toward 0
  261. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L35" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  262. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L35" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  263. </dd>
  264. </div>
  265. <div id="FE_UNDERFLOW">
  266. <dt><pre><a href="fenv.html#FE_UNDERFLOW"><span class="Identifier">FE_UNDERFLOW</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  267. <dd>
  268. result not representable due to underflow
  269. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L27" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  270. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L27" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  271. </dd>
  272. </div>
  273. <div id="FE_UPWARD">
  274. <dt><pre><a href="fenv.html#FE_UPWARD"><span class="Identifier">FE_UPWARD</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span>.}<span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a></pre></dt>
  275. <dd>
  276. round toward +Inf
  277. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L37" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  278. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L37" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  279. </dd>
  280. </div>
  281. </dl>
  282. </div>
  283. <div class="section" id="12">
  284. <h1><a class="toc-backref" href="#12">Procs</a></h1>
  285. <dl class="item">
  286. <div id="feclearexcept-procs-all">
  287. <div id="feclearexcept,cint">
  288. <dt><pre><span class="Keyword">proc</span> <a href="#feclearexcept%2Ccint"><span class="Identifier">feclearexcept</span></a><span class="Other">(</span><span class="Identifier">excepts</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span>
  289. <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  290. <dd>
  291. Clear the supported exceptions represented by <tt class="docutils literal"><span class="pre"><span class="Identifier">excepts</span></span></tt>.
  292. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L61" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  293. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L61" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  294. </dd>
  295. </div>
  296. </div>
  297. <div id="fegetenv-procs-all">
  298. <div id="fegetenv,ptr.Tfenv">
  299. <dt><pre><span class="Keyword">proc</span> <a href="#fegetenv%2Cptr.Tfenv"><span class="Identifier">fegetenv</span></a><span class="Other">(</span><span class="Identifier">envp</span><span class="Other">:</span> <span class="Keyword">ptr</span> <a href="fenv.html#Tfenv"><span class="Identifier">Tfenv</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
  300. <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  301. <dd>
  302. Store the current floating-point environment in the object pointed to by <tt class="docutils literal"><span class="pre"><span class="Identifier">envp</span></span></tt>.
  303. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L87" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  304. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L87" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  305. </dd>
  306. </div>
  307. </div>
  308. <div id="fegetexceptflag-procs-all">
  309. <div id="fegetexceptflag,ptr.Tfexcept,cint">
  310. <dt><pre><span class="Keyword">proc</span> <a href="#fegetexceptflag%2Cptr.Tfexcept%2Ccint"><span class="Identifier">fegetexceptflag</span></a><span class="Other">(</span><span class="Identifier">flagp</span><span class="Other">:</span> <span class="Keyword">ptr</span> <a href="fenv.html#Tfexcept"><span class="Identifier">Tfexcept</span></a><span class="Other">;</span> <span class="Identifier">excepts</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span>
  311. <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  312. <dd>
  313. Store implementation-defined representation of the exception flags indicated by <tt class="docutils literal"><span class="pre"><span class="Identifier">excepts</span></span></tt> in the object pointed to by <tt class="docutils literal"><span class="pre"><span class="Identifier">flagp</span></span></tt>.
  314. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L64" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  315. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L64" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  316. </dd>
  317. </div>
  318. </div>
  319. <div id="fegetround-procs-all">
  320. <div id="fegetround">
  321. <dt><pre><span class="Keyword">proc</span> <a href="#fegetround"><span class="Identifier">fegetround</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
  322. <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  323. <dd>
  324. Get current rounding direction.
  325. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L81" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  326. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L81" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  327. </dd>
  328. </div>
  329. </div>
  330. <div id="feholdexcept-procs-all">
  331. <div id="feholdexcept,ptr.Tfenv">
  332. <dt><pre><span class="Keyword">proc</span> <a href="#feholdexcept%2Cptr.Tfenv"><span class="Identifier">feholdexcept</span></a><span class="Other">(</span><span class="Identifier">envp</span><span class="Other">:</span> <span class="Keyword">ptr</span> <a href="fenv.html#Tfenv"><span class="Identifier">Tfenv</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span>
  333. <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  334. <dd>
  335. Save the current environment in the object pointed to by <tt class="docutils literal"><span class="pre"><span class="Identifier">envp</span></span></tt>, clear exception flags and install a non-stop mode (if available) for all exceptions.
  336. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L91" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  337. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L91" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  338. </dd>
  339. </div>
  340. </div>
  341. <div id="feraiseexcept-procs-all">
  342. <div id="feraiseexcept,cint">
  343. <dt><pre><span class="Keyword">proc</span> <a href="#feraiseexcept%2Ccint"><span class="Identifier">feraiseexcept</span></a><span class="Other">(</span><span class="Identifier">excepts</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span>
  344. <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  345. <dd>
  346. Raise the supported exceptions represented by <tt class="docutils literal"><span class="pre"><span class="Identifier">excepts</span></span></tt>.
  347. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L69" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  348. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L69" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  349. </dd>
  350. </div>
  351. </div>
  352. <div id="fesetenv-procs-all">
  353. <div id="fesetenv,ptr.Tfenv">
  354. <dt><pre><span class="Keyword">proc</span> <a href="#fesetenv%2Cptr.Tfenv"><span class="Identifier">fesetenv</span></a><span class="Other">(</span><span class="Identifier">a1</span><span class="Other">:</span> <span class="Keyword">ptr</span> <a href="fenv.html#Tfenv"><span class="Identifier">Tfenv</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
  355. <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  356. <dd>
  357. Establish the floating-point environment represented by the object pointed to by <tt class="docutils literal"><span class="pre"><span class="Identifier">envp</span></span></tt>.
  358. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L96" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  359. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L96" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  360. </dd>
  361. </div>
  362. </div>
  363. <div id="fesetexceptflag-procs-all">
  364. <div id="fesetexceptflag,ptr.Tfexcept,cint">
  365. <dt><pre><span class="Keyword">proc</span> <a href="#fesetexceptflag%2Cptr.Tfexcept%2Ccint"><span class="Identifier">fesetexceptflag</span></a><span class="Other">(</span><span class="Identifier">flagp</span><span class="Other">:</span> <span class="Keyword">ptr</span> <a href="fenv.html#Tfexcept"><span class="Identifier">Tfexcept</span></a><span class="Other">;</span> <span class="Identifier">excepts</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span>
  366. <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  367. <dd>
  368. Set complete status for exceptions indicated by <tt class="docutils literal"><span class="pre"><span class="Identifier">excepts</span></span></tt> according to the representation in the object pointed to by <tt class="docutils literal"><span class="pre"><span class="Identifier">flagp</span></span></tt>.
  369. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L72" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  370. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L72" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  371. </dd>
  372. </div>
  373. </div>
  374. <div id="fesetround-procs-all">
  375. <div id="fesetround,cint">
  376. <dt><pre><span class="Keyword">proc</span> <a href="#fesetround%2Ccint"><span class="Identifier">fesetround</span></a><span class="Other">(</span><span class="Identifier">roundingDirection</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span>
  377. <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  378. <dd>
  379. Establish the rounding direction represented by <tt class="docutils literal"><span class="pre"><span class="Identifier">roundingDirection</span></span></tt>.
  380. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L84" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  381. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L84" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  382. </dd>
  383. </div>
  384. </div>
  385. <div id="fetestexcept-procs-all">
  386. <div id="fetestexcept,cint">
  387. <dt><pre><span class="Keyword">proc</span> <a href="#fetestexcept%2Ccint"><span class="Identifier">fetestexcept</span></a><span class="Other">(</span><span class="Identifier">excepts</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span>
  388. <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  389. <dd>
  390. Determine which of subset of the exceptions specified by <tt class="docutils literal"><span class="pre"><span class="Identifier">excepts</span></span></tt> are currently set.
  391. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L77" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  392. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L77" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  393. </dd>
  394. </div>
  395. </div>
  396. <div id="feupdateenv-procs-all">
  397. <div id="feupdateenv,ptr.Tfenv">
  398. <dt><pre><span class="Keyword">proc</span> <a href="#feupdateenv%2Cptr.Tfenv"><span class="Identifier">feupdateenv</span></a><span class="Other">(</span><span class="Identifier">envp</span><span class="Other">:</span> <span class="Keyword">ptr</span> <a href="fenv.html#Tfenv"><span class="Identifier">Tfenv</span></a><span class="Other">)</span><span class="Other">:</span> <a href="ctypes.html#cint"><span class="Identifier">cint</span></a> {.<span class="Identifier">importc</span><span class="Other">,</span> <span class="Identifier">header</span><span class="Other">:</span> <span class="StringLit">&quot;&lt;fenv.h&gt;&quot;</span><span class="Other">,</span>
  399. <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  400. <dd>
  401. Save current exceptions in temporary storage, install environment represented by object pointed to by <tt class="docutils literal"><span class="pre"><span class="Identifier">envp</span></span></tt> and raise exceptions according to saved exceptions.
  402. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L100" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  403. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L100" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  404. </dd>
  405. </div>
  406. </div>
  407. </dl>
  408. </div>
  409. <div class="section" id="18">
  410. <h1><a class="toc-backref" href="#18">Templates</a></h1>
  411. <dl class="item">
  412. <div id="digits-templates-all">
  413. <div id="digits.t,typedesc[float32]">
  414. <dt><pre><span class="Keyword">template</span> <a href="#digits.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">digits</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  415. <dd>
  416. Number of decimal digits that can be represented in a 32-bit floating-point type without losing precision.
  417. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L135" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  418. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L135" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  419. </dd>
  420. </div>
  421. <div id="digits.t,typedesc[float64]">
  422. <dt><pre><span class="Keyword">template</span> <a href="#digits.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">digits</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  423. <dd>
  424. Number of decimal digits that can be represented in a 64-bit floating-point type without losing precision.
  425. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L161" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  426. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L161" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  427. </dd>
  428. </div>
  429. </div>
  430. <div id="epsilon-templates-all">
  431. <div id="epsilon.t,typedesc[float32]">
  432. <dt><pre><span class="Keyword">template</span> <a href="#epsilon.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">epsilon</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#float32"><span class="Identifier">float32</span></a></pre></dt>
  433. <dd>
  434. The difference between 1.0 and the smallest number greater than 1.0 that can be represented in a 32-bit floating-point type.
  435. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L154" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  436. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L154" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  437. </dd>
  438. </div>
  439. <div id="epsilon.t,typedesc[float64]">
  440. <dt><pre><span class="Keyword">template</span> <a href="#epsilon.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">epsilon</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#float64"><span class="Identifier">float64</span></a></pre></dt>
  441. <dd>
  442. The difference between 1.0 and the smallest number greater than 1.0 that can be represented in a 64-bit floating-point type.
  443. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L180" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  444. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L180" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  445. </dd>
  446. </div>
  447. </div>
  448. <div id="fpRadix-templates-all">
  449. <div id="fpRadix.t">
  450. <dt><pre><span class="Keyword">template</span> <a href="#fpRadix.t"><span class="Identifier">fpRadix</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  451. <dd>
  452. The (integer) value of the radix used to represent any floating point type on the architecture used to build the program.
  453. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L128" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  454. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L128" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  455. </dd>
  456. </div>
  457. </div>
  458. <div id="mantissaDigits-templates-all">
  459. <div id="mantissaDigits.t,typedesc[float32]">
  460. <dt><pre><span class="Keyword">template</span> <a href="#mantissaDigits.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">mantissaDigits</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  461. <dd>
  462. Number of digits (in base <tt class="docutils literal"><span class="pre"><span class="Identifier">floatingPointRadix</span></span></tt>) in the mantissa of 32-bit floating-point numbers.
  463. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L132" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  464. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L132" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  465. </dd>
  466. </div>
  467. <div id="mantissaDigits.t,typedesc[float64]">
  468. <dt><pre><span class="Keyword">template</span> <a href="#mantissaDigits.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">mantissaDigits</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  469. <dd>
  470. Number of digits (in base <tt class="docutils literal"><span class="pre"><span class="Identifier">floatingPointRadix</span></span></tt>) in the mantissa of 64-bit floating-point numbers.
  471. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L158" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  472. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L158" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  473. </dd>
  474. </div>
  475. </div>
  476. <div id="max10Exponent-templates-all">
  477. <div id="max10Exponent.t,typedesc[float32]">
  478. <dt><pre><span class="Keyword">template</span> <a href="#max10Exponent.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">max10Exponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  479. <dd>
  480. Maximum (positive) exponent in base 10 for 32-bit floating-point numbers.
  481. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L145" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  482. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L145" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  483. </dd>
  484. </div>
  485. <div id="max10Exponent.t,typedesc[float64]">
  486. <dt><pre><span class="Keyword">template</span> <a href="#max10Exponent.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">max10Exponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  487. <dd>
  488. Maximum (positive) exponent in base 10 for 64-bit floating-point numbers.
  489. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L171" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  490. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L171" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  491. </dd>
  492. </div>
  493. </div>
  494. <div id="maxExponent-templates-all">
  495. <div id="maxExponent.t,typedesc[float32]">
  496. <dt><pre><span class="Keyword">template</span> <a href="#maxExponent.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">maxExponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  497. <dd>
  498. Maximum (positive) exponent for 32-bit floating-point numbers.
  499. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L140" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  500. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L140" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  501. </dd>
  502. </div>
  503. <div id="maxExponent.t,typedesc[float64]">
  504. <dt><pre><span class="Keyword">template</span> <a href="#maxExponent.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">maxExponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  505. <dd>
  506. Maximum (positive) exponent for 64-bit floating-point numbers.
  507. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L166" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  508. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L166" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  509. </dd>
  510. </div>
  511. </div>
  512. <div id="maximumPositiveValue-templates-all">
  513. <div id="maximumPositiveValue.t,typedesc[float32]">
  514. <dt><pre><span class="Keyword">template</span> <a href="#maximumPositiveValue.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">maximumPositiveValue</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#float32"><span class="Identifier">float32</span></a></pre></dt>
  515. <dd>
  516. The largest positive number that can be represented in a 32-bit floating-point type.
  517. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L151" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  518. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L151" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  519. </dd>
  520. </div>
  521. <div id="maximumPositiveValue.t,typedesc[float64]">
  522. <dt><pre><span class="Keyword">template</span> <a href="#maximumPositiveValue.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">maximumPositiveValue</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#float64"><span class="Identifier">float64</span></a></pre></dt>
  523. <dd>
  524. The largest positive number that can be represented in a 64-bit floating-point type.
  525. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L177" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  526. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L177" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  527. </dd>
  528. </div>
  529. </div>
  530. <div id="min10Exponent-templates-all">
  531. <div id="min10Exponent.t,typedesc[float32]">
  532. <dt><pre><span class="Keyword">template</span> <a href="#min10Exponent.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">min10Exponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  533. <dd>
  534. Minimum (negative) exponent in base 10 for 32-bit floating-point numbers.
  535. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L142" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  536. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L142" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  537. </dd>
  538. </div>
  539. <div id="min10Exponent.t,typedesc[float64]">
  540. <dt><pre><span class="Keyword">template</span> <a href="#min10Exponent.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">min10Exponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  541. <dd>
  542. Minimum (negative) exponent in base 10 for 64-bit floating-point numbers.
  543. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L168" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  544. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L168" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  545. </dd>
  546. </div>
  547. </div>
  548. <div id="minExponent-templates-all">
  549. <div id="minExponent.t,typedesc[float32]">
  550. <dt><pre><span class="Keyword">template</span> <a href="#minExponent.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">minExponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  551. <dd>
  552. Minimum (negative) exponent for 32-bit floating-point numbers.
  553. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L138" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  554. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L138" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  555. </dd>
  556. </div>
  557. <div id="minExponent.t,typedesc[float64]">
  558. <dt><pre><span class="Keyword">template</span> <a href="#minExponent.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">minExponent</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a></pre></dt>
  559. <dd>
  560. Minimum (negative) exponent for 64-bit floating-point numbers.
  561. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L164" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  562. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L164" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  563. </dd>
  564. </div>
  565. </div>
  566. <div id="minimumPositiveValue-templates-all">
  567. <div id="minimumPositiveValue.t,typedesc[float32]">
  568. <dt><pre><span class="Keyword">template</span> <a href="#minimumPositiveValue.t%2Ctypedesc%5Bfloat32%5D"><span class="Identifier">minimumPositiveValue</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float32"><span class="Identifier">float32</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#float32"><span class="Identifier">float32</span></a></pre></dt>
  569. <dd>
  570. The smallest positive (nonzero) number that can be represented in a 32-bit floating-point type.
  571. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L148" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  572. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L148" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  573. </dd>
  574. </div>
  575. <div id="minimumPositiveValue.t,typedesc[float64]">
  576. <dt><pre><span class="Keyword">template</span> <a href="#minimumPositiveValue.t%2Ctypedesc%5Bfloat64%5D"><span class="Identifier">minimumPositiveValue</span></a><span class="Other">(</span><span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">[</span><a href="system.html#float64"><span class="Identifier">float64</span></a><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#float64"><span class="Identifier">float64</span></a></pre></dt>
  577. <dd>
  578. The smallest positive (nonzero) number that can be represented in a 64-bit floating-point type.
  579. <a href="https://github.com/nim-lang/Nim/tree/devel/lib/pure/fenv.nim#L174" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
  580. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/pure/fenv.nim#L174" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
  581. </dd>
  582. </div>
  583. </div>
  584. </dl>
  585. </div>
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  591. <small style="color: var(--hint);">Made with Nim. Generated: 2025-04-22 15:32:27 UTC</small>
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