34 lines
605 B
C
34 lines
605 B
C
|
|
||
|
|
/* @(#)z_coshf.c 1.0 98/08/13 */
|
||
|
|
/******************************************************************
|
||
|
|
* Hyperbolic Cosine
|
||
|
|
*
|
||
|
|
* Input:
|
||
|
|
* x - floating point value
|
||
|
|
*
|
||
|
|
* Output:
|
||
|
|
* hyperbolic cosine of x
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* This routine returns the hyperbolic cosine of x.
|
||
|
|
*
|
||
|
|
*****************************************************************/
|
||
|
|
|
||
|
|
#include "fdlibm.h"
|
||
|
|
#include "zmath.h"
|
||
|
|
|
||
|
|
float
|
||
|
|
_DEFUN (coshf, (float),
|
||
|
|
float x)
|
||
|
|
{
|
||
|
|
return (sinehf (x, 1));
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef _DOUBLE_IS_32BITS
|
||
|
|
double cosh (double x)
|
||
|
|
{
|
||
|
|
return (double) sinehf ((float) x, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|