58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/* wf_cosh.c -- float version of w_cosh.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.
|
|
* ====================================================
|
|
*/
|
|
|
|
/*
|
|
* wrapper coshf(x)
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
#include <errno.h>
|
|
|
|
#ifdef __STDC__
|
|
float coshf(float x) /* wrapper coshf */
|
|
#else
|
|
float coshf(x) /* wrapper coshf */
|
|
float x;
|
|
#endif
|
|
{
|
|
#ifdef _IEEE_LIBM
|
|
return __ieee754_coshf(x);
|
|
#else
|
|
float z;
|
|
z = __ieee754_coshf(x);
|
|
if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
|
|
if(fabsf(x)>8.9415985107e+01f) {
|
|
/* coshf(finite) overflow */
|
|
errno = ERANGE;
|
|
return HUGE_VALF;
|
|
} else
|
|
return z;
|
|
#endif
|
|
}
|
|
|
|
#ifdef _DOUBLE_IS_32BITS
|
|
|
|
#ifdef __STDC__
|
|
double cosh(double x)
|
|
#else
|
|
double cosh(x)
|
|
double x;
|
|
#endif
|
|
{
|
|
return (double) coshf((float) x);
|
|
}
|
|
|
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|