HP-UX Reference (11i v3 07/02) - 3 Library Functions N-Z (vol 7)

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sincos(3M) sincos(3M)

(HP Integrity Server Only)

NAME

sincos(), sincosf(), sincosl(), sincosw(), sincosq() - functions that compute both sine and cosine

SYNOPSIS

#include <math.h>

void sincos(double x, double *sptr, double *cptr);

void sincosf(float x, float *sptr, float *cptr);

void sincosl(long double x, long double *sptr, long double *cptr);

void sincosw(extended x, extended *sptr, extended *cptr);

void sincosq(quad x, quad *sptr, quad *cptr);

DESCRIPTION

These functions are available only for Integrity servers.

sincos() stores the sine of x (x speciﬁed in radians) in the object pointed to by sptr and stores the cosine

of x in the object pointed to by cptr.

sincosf() is a float version of sincos(); it takes float and float * arguments.

sincosl() is a long double version of sincos(); it takes long double and long double

arguments.

sincosw() is an extended version of sincos(); it takes extended and extended * argu-

ments.

sincosq() is equivalent to sincosl() on HP-UX systems.

USAGE

To use these functions compile either with the default -Ae option or with the -Aa

and the

-D_HPUX_SOURCE options.

To use

sincosw() or sincosq() , compile also with the -fpwidetypes option.

To use any of these functions, make sure your program includes <math.h>, and link in the math library

by specifying -lm on the compiler or linker command line.

For more information, see the HP-UX ﬂoating-point guide for HP Integrity servers at the following site:

http://www.hp.com/go/fp

RETURN VALUE

sincos(±0,sptr,cptr) stores ±0 in the object pointed to by sptr and 1 in the object pointed to by cptr.

If x is ±INFINITY,

sincos() stores NaN in the objects pointed to by its pointer arguments and raises the

invalid exception.

If x is NaN,

sincos() stores NaN in the objects pointed to by its pointer arguments.

When it raises no other exception, whether sincos() raises the inexact exception is unspeciﬁed.

ERRORS

No errors are deﬁned.