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.  These
   functions compute both at the same time, and store 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.

ATTRIBUTES

   For   an   explanation   of   the  terms  used  in  this  section,  see
   attributes(7).

   
   Interface                       Attribute      Value   
   
   sincos(), sincosf(), sincosl()  Thread safety  MT-Safe 
   

CONFORMING TO

   These functions are GNU extensions.

SEE ALSO

   cos(3), sin(3), tan(3)

COLOPHON

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