zig/lib/libc/mingw/math/round.c
Andrew Kelley 49d1a4c562 move lib dirs to lib subdir
also start prefering NtDll API. so far:
 * NtQueryInformationFile
 * NtClose

adds a performance workaround for windows unicode conversion. but that
should probably be removed before merging
2019-07-15 17:54:50 -04:00

27 lines
477 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 <math.h>
double
round (double x)
{
double res;
if (x >= 0.0)
{
res = ceil (x);
if (res - x > 0.5)
res -= 1.0;
}
else
{
res = ceil (-x);
if (res + x > 0.5)
res -= 1.0;
res = -res;
}
return res;
}