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Link the <fenv.h> header (#16597)

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konsumlamm
2021-01-05 20:51:51 +01:00
committed by GitHub
parent c04f305bf7
commit 2c2baa9fad
2 changed files with 6 additions and 5 deletions
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6
lib/pure/fenv.nim
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@@ -9,6 +9,8 @@
## 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
## [<fenv.h>](https://en.cppreference.com/w/c/numeric/fenv) header.
when defined(Posix) and not defined(genode):
{.passl: "-lm".}
@@ -35,8 +37,8 @@ var
FE_UPWARD* {.importc, header: "<fenv.h>".}: cint
## round toward +Inf
FE_DFL_ENV* {.importc, header: "<fenv.h>".}: cint
## macro of type pointer to fenv_t to be used as the argument
## to functions taking an argument of type fenv_t; in this
## macro of type pointer to `fenv_t` to be used as the argument
## to functions taking an argument of type `fenv_t`; in this
## case the default environment will be used
type

5
tests/stdlib/tfenv.nim
View File

@@ -1,8 +1,7 @@
import fenv
import std/fenv
func is_significant(x: float): bool =
if x > minimumPositiveValue(float) and x < maximumPositiveValue(float): true
else: false
x > minimumPositiveValue(float) and x < maximumPositiveValue(float)
doAssert is_significant(10.0)