__cospid32(), __cospid64(), __cospid128() — Calculate cosine of pi *x
Standards
Standards / Extensions | C or C++ | Dependencies |
---|---|---|
Language Environment® | both | z/OS® V1.8 |
Format
#define __STDC_WANT_DEC_FP__
#include <math.h>
_Decimal32 __cospid32(_Decimal32 x);
_Decimal64 __cospid64(_Decimal64 x);
_Decimal128 __cospid128(_Decimal128 x);
General description
Calculates the cosine
of pi * x. The value x is
expressed in radians.
Notes:
- To use IEEE decimal floating-point, the hardware must have the Decimal Floating-Point Facility installed.
- These functions work in IEEE decimal floating-point format. See "IEEE Decimal Floating-Point" for more information.
Returned value
Returns the calculated value.
If x is outside the prescribed limits, the value is not calculated. Instead, the function either returns 1, or returns 0 and sets errno to ERANGE.
Example
/* CELEBC49
This example illustrates the __cospid32() function.
*/
#define __STDC_WANT_DEC_FP__
#include <math.h>
#include <stdio.h>
int main(void)
{
_Decimal32 x, y;
x = 1.0DF;
y = __cospid32(x);
printf("__cospid32(%Hf) = %Hf\n", x, y);
}