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/* @(#)z_acosf.c 1.0 98/08/13 */
/******************************************************************
* Arccosine
*
* Input:
* x - floating point value
*
* Output:
* arccosine of x
*
* Description:
* This routine returns the arccosine of x.
*
*****************************************************************/
#include "fdlibm.h"
#include "zmath.h"
float
acosf (float x)
{
return (asinef (x, 1));
}
#ifdef _DOUBLE_IS_32BITS
double acos (double x)
{
return (double) asinef ((float) x, 1);
}
#endif /* defined(_DOUBLE_IS_32BITS) */
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