44 lines
817 B
C
44 lines
817 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.
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
nexttowardf.c
|
||
|
|
Contributed by Danny Smith <dannysmith@users.sourceforge.net>
|
||
|
|
No copyright claimed, absolutely no warranties.
|
||
|
|
|
||
|
|
2005-05-10
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <math.h>
|
||
|
|
|
||
|
|
float
|
||
|
|
nexttowardf (float x, long double y)
|
||
|
|
{
|
||
|
|
union
|
||
|
|
{
|
||
|
|
float f;
|
||
|
|
unsigned int i;
|
||
|
|
} u;
|
||
|
|
|
||
|
|
long double xx = x;
|
||
|
|
|
||
|
|
if (isnan (y) || isnan (x))
|
||
|
|
return x + y;
|
||
|
|
if (xx == y )
|
||
|
|
/* nextafter (0.0, -O.0) should return -0.0. */
|
||
|
|
return y;
|
||
|
|
u.f = x;
|
||
|
|
if (x == 0.0F)
|
||
|
|
{
|
||
|
|
u.i = 1;
|
||
|
|
return y > 0.0L ? u.f : -u.f;
|
||
|
|
}
|
||
|
|
if (((x > 0.0F) ^ (y > xx)) == 0)
|
||
|
|
u.i++;
|
||
|
|
else
|
||
|
|
u.i--;
|
||
|
|
return u.f;
|
||
|
|
}
|