sincos(3) - NetBSD Manual Pages

Command:
Section:
Arch:
Collection:
>>>
SINCOS(3)               NetBSD 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 and NetBSD 10.0 to aid in
     writing various complex function contained in ISO/IEC 9899:1999
     (``ISO C99'').


NetBSD 10.99                     June 11, 2023                    NetBSD 10.99