NAME
sincos, sincosf,
sincosl —
sine and cosine functions
SYNOPSIS
/* -lm */
#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 objects pointed to by s and
c are assigned the values of sine and cosine,
respectively.
SEE ALSO
HISTORY
These functions first appeared in OpenBSD 6.3.