kolibrios-gitea/contrib/sdk/sources/newlib/math/sf_ldexp.c
Sergey Semyonov (Serge) 754f9336f0 upload sdk
git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-12-15 08:09:20 +00:00

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) */