sincos, sincosf, sincosl - calculate sin and cos simultaneously
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <math.h>
void sincos(double x, double *sin, double *cos);
void sincosf(float x, float *sin, float *cos);
void sincosl(long double x, long double *sin, long double *cos);
Several applications need sine and cosine of the same angle
x
. These functions compute both at the same time, and store the
results in *sin
and *cos
. Using this function can be
more efficient than two separate calls to sin(3) and
cos(3).
If x
is a NaN, a NaN is returned in *sin
and
*cos
.
If x
is positive infinity or negative infinity, a domain
error occurs, and a NaN is returned in *sin
and
*cos
.
These functions return void
.