sincos(3) - Linux man page

Name

sincos, sincosf, sincosl - calculate sin and cos simultaneously

Synopsis

#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);

Link with -lm.

Description

Several applications need sine and cosine of the same angle x. This function computes both at the same time, and stores the results in *sin and *cos.

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.

Return Value

These functions return void.

Errors

See math_error(7) for information on how to determine whether an error has occurred when calling these functions.

The following errors can occur:

Domain error: x is an infinity: An invalid floating-point exception (FE_INVALID) is raised.

These functions do not set errno.

Versions

These functions first appeared in glibc in version 2.1.

Conforming to

This function is a GNU extension.