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SINCOS

Section: Linux Programmer's Manual (3)
Updated: 2008-08-11
Index Return to Main Contents

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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.  

SEE ALSO

cos(3), sin(3), tan(3)  

COLOPHON

This page is part of release 3.35 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://man7.org/linux/man-pages/.

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ERRORS

VERSIONS

CONFORMING TO

SEE ALSO

COLOPHON

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