man3/sincos.3

   1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
   2 .\" Distributed under GPL, 2002-07-27 Walter Harms
   3 .\"
   4 .TH SINCOS 3  2004-10-05 "GNU" "Linux Programmer's Manual"
   5 .SH NAME
   6 sincos, sincosf, sincosl \- calculate sin and cos simultaneously
   7 .SH SYNOPSIS
   8 .nf
   9 .B #define _GNU_SOURCE
  10 .B #include <math.h>
  11 .sp
  12 .BI "void sincos(double " x ", double *" sin ", double *" cos );
  13 .br
  14 .BI "void sincosf(float " x ", float *" sin ", float *" cos );
  15 .br
  16 .BI "void sincosl(long double " x ", long double *" sin ", long double *" cos );
  17 .fi
  18 .sp
  19 Link with \fI\-lm\fP.
  20 .SH DESCRIPTION
  21 Several applications need sine and cosine of the same angle
  22 .IR x .
  23 This function computes both at the same time, and stores the results
  24 via the given pointers.
  25 .SH "CONFORMING TO"
  26 This function is a GNU extension.
  27 .SH "SEE ALSO"
  28 .BR cos (3),
  29 .BR sin (3),
  30 .BR tan (3),
  31 .BR feature_test_macros (7)