SINCOS

Section: Linux Programmer's Manual (3)
Updated: 2008-08-11
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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.

COLOPHON

This page is part of release 3.22 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/.