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SINCOS(3) FreeBSD Library Functions Manual SINCOS(3)
NAME
sincos, sincosf, sincosl - sine and cosine functions
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
void
sincos(double x, double *s, double *c);
void
sincosf(float x, float *s, float *c);
void
sincosl(long double x, long double *s, long double *c);
DESCRIPTION
The sincos(), sincosf(), and sincosl() functions compute the sine and
cosine of x. Using these functions allows argument reduction to occur
only once instead of twice with individual invocations of sin() and
cos(). Like sin() and cos(), a large magnitude argument may yield a
result with little or no significance.
RETURN VALUES
Upon returning from sincos(), sincosf(), and sincosl(), the memory
pointed to by *s and *c are assigned the values of sine and cosine,
respectively.
SEE ALSO
cos(3), sin(3)
HISTORY
These functions were added to FreeBSD 11.2 to aid in writing various
complex function contained in ISO/IEC 9899:1999 ("ISO C99").
FreeBSD 14.0-RELEASE-p6 March 12, 2011 FreeBSD 14.0-RELEASE-p6