SINCOS

 

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.  

ATTRIBUTES

 

Multithreading (see pthreads(7))

The sincos(), sincosf(), and sincosl() functions are thread-safe.  

CONFORMING TO

This function is a GNU extension.