__sinpid32(), __sinpid64(), __sinpid128() — Calculate sine 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 __sinpid32(_Decimal32 x);
_Decimal64 __sinpid64(_Decimal64 x);
_Decimal128 __sinpid128(_Decimal128 x);General description
Calculates the sine
of pi * x, with x 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
If successful, the function returns the calculated value, expressed as a _Decimal32, _Decimal64, or _Decimal128 number.
If x is outside prescribed limits, the value is not calculated. Instead, the function returns 0 and sets errno to EDOM.
Example
/* CELEBS70
This example illustrates the __sinpid64() function.
*/
#define __STDC_WANT_DEC_FP__
#include <math.h>
#include <stdio.h>
int main(void)
{
_Decimal64 x, y;
x = 0.5DD;
y = __sinpid64(x);
printf("__sinpid64(%Df) = %Df\n", x, y);
}