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

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sind(3M) sind(3M)

NAME

sind( ), sindf( ), sindl( ), sindw( ), sindq( ) - sine functions of argument speciﬁed in degrees

SYNOPSIS

#include <math.h>

double sind(double x);

float sindf(float x);

Itanium(R)-based System Only

long double sindl(long double x);

extended sindw(extended x);

quad sindq(quad x);

DESCRIPTION

sind() returns the sine of x (x speciﬁed in degrees).

On PA-RISC systems,

sind() may lose accuracy when x is far from zero.

sindf() is a float version of sind(); it takes a

float argument and returns a float result.

Itanium-based System Only

sindl() is a long double version of sind(); it takes a long double argument and returns a

long double result.

sindw() is an extended version of sind(); it takes an extended argument and returns an

extended result.

sindq() is equivalent to sindl() on HP-UX systems.

USAGE

To use these functions compile either with the default

-Ae option or with the

-Aa and

-D_HPUX_SOURCE options.

To use (for Itanium-based systems)

sindw() or sindq(), 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

If x is ±INFINITY,

sind() returns NaN and raises the invalid exception.

If x is NaN,

sind() returns NaN. If x is NaN or ±INFINITY,

sind() returns NaN.

ERRORS

No errors are deﬁned.