sincos man page

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);

Link with -lm.


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.

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.


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.


These functions first appeared in glibc in version 2.1.


For an explanation of the terms used in this section, see attributes(7).

sincos(), sincosf(), sincosl()Thread safetyMT-Safe

Conforming to

These functions are GNU extensions.

See Also

cos(3), sin(3), tan(3)

Referenced By

cos(3), sin(3).

Explore man page connections for sincos(3).

sincosf(3) and sincosl(3) are aliases of sincos(3).