Linux manual pages Section 3  

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);
 
[Note] Note

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 3.33 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/.


  Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de)
Distributed under GPL, 2002-07-27 Walter Harms
and Copyright 2008, Linux Foundation, written by Michael Kerrisk
    <mtk.manpagesgmail.com>