zig/libc/mingw/misc/feupdateenv.c
Andrew Kelley 2bb93784c6
mingw: build and link mingwex.lib
zig can now cross compile hello.c targeting windows
2019-07-10 17:41:34 -04:00

26 lines
933 B
C

/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the mingw-w64 runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
#include <fenv.h>
/* 7.6.4.4
The feupdateenv function saves the currently raised exceptions in
its automatic storage, installs the floating-point environment
represented by the object pointed to by envp, and then raises the
saved exceptions. The argument envp shall point to an object
set by a call to feholdexcept or fegetenv, or equal the macro
FE_DFL_ENV or an implementation-defined environment macro. */
/* FIXME: this works but surely there must be a better way. */
int feupdateenv (const fenv_t * envp)
{
unsigned int _fexcept = fetestexcept (FE_ALL_EXCEPT); /*save excepts */
fesetenv (envp); /* install the env */
feraiseexcept (_fexcept); /* raise the execept */
return 0;
}