mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-13 18:37:08 +03:00
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/* sf_ldexp.c -- float version of s_ldexp.c.
|
|
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
|
|
*/
|
|
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
#include <errno.h>
|
|
|
|
#ifdef __STDC__
|
|
float ldexpf(float value, int exp)
|
|
#else
|
|
float ldexpf(value, exp)
|
|
float value; int exp;
|
|
#endif
|
|
{
|
|
if(!finitef(value)||value==(float)0.0) return value;
|
|
value = scalbnf(value,exp);
|
|
if(!finitef(value)||value==(float)0.0) errno = ERANGE;
|
|
return value;
|
|
}
|
|
|
|
#ifdef _DOUBLE_IS_32BITS
|
|
|
|
#ifdef __STDC__
|
|
double ldexp(double value, int exp)
|
|
#else
|
|
double ldexp(value, exp)
|
|
double value; int exp;
|
|
#endif
|
|
{
|
|
return (double) ldexpf((float) value, exp);
|
|
}
|
|
|
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|