SINCOS(3)

NAME
sincos, sincosf, sincosl - calculate sin and cos simultaneously

SYNOPSIS
#define _GNU_SOURCE
#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.

SEE ALSO
cos(3), sin(3), tan(3), feature_test_macros(7)

COLOPHON
This page is part of release 3.15 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.