Manual Reference Pages - SINCOS (3)
NAME
sincos, sincosf, sincosl - calculate sin and cos simultaneously
CONTENTS
Synopsis
Description
Return Value
Errors
Versions
Colophon
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 3.44 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 /.

GNU
SINCOS (3)
2008-08-11

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