huschi.net

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 3.53 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)