HP-UX Reference (11i v2 04/09) - 3 Library Functions N-Z (vol 7)

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sincosd(3M) sincosd(3M)

(Itanium(R)-based System Only)

NAME

sincosd( ), sincosdf( ), sincosdl( ), sincosdw( ), sincosdq( ) - functions that compute both sine and cosine of

an argument speciﬁed in degrees

SYNOPSIS

#include <math.h>

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

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

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

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

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

DESCRIPTION

These functions are available only for Itanium-based systems.

sincosd() stores the sine of x (x speciﬁed in degrees) in the object pointed to by sptr and stores the

cosine of x in the object pointed to by cptr.

sincosdf() is a float version of sincosd(); it takes float and float * arguments.

sincosdl() is a long double version of sincosd(); it takes long double and long dou-

ble * arguments.

sincosdw() is an extended version of sincosd(); it takes extended and extended * argu-

ments.

sincosdq() is equivalent to sincosdl() 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

sincosdw() or sincosdq(), 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.

RETURN VALUE

sincosd(±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,

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

the invalid exception.

If x is NaN,

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

ERRORS

No errors are deﬁned.