minix/lib/nbsd_libm/src/s_ldexpf.c
Gianluca Guida 0dc9e0996a Import unmodified NetBSD's libm for compiling with new libc.
As the current libc includes a libm implementation, with the new libc
this is needed. Unneeded (for the moment) archs have been removed.
2011-03-18 15:52:16 +00:00

33 lines
936 B
C

/* s_ldexp0f.c -- float version of s_ldexp0.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 <sys/cdefs.h>
#if defined(LIBM_SCCS) && !defined(lint)
__RCSID("$NetBSD: s_ldexpf.c,v 1.8 2010/04/23 19:17:07 drochner Exp $");
#endif
#include "namespace.h"
#include "math.h"
#include "math_private.h"
#include <errno.h>
float
ldexpf(float value, int exp0)
{
if(!finitef(value)||value==(float)0.0) return value;
value = scalbnf(value,exp0);
if(!finitef(value)||value==(float)0.0) errno = ERANGE;
return value;
}