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Linux 2.6 - man page for sincos (linux section 3)

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SINCOS(3)			    Linux Programmer's Manual				SINCOS(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);

       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 3.55 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					    2008-08-11					SINCOS(3)
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