HP-UX Reference (11i v2 07/12) - 3 Library Functions A-M (vol 6)

cot(3M) cot(3M)

(Itanium(R)-based System Only)

NAME

cot( ), cotf( ), cotl( ), cotw( ), cotq( ) - cotangent functions

SYNOPSIS

#include <math.h>

double cot(double x);

float cotf(float x);

long double cotl(long double x);

extended cotw(extended x);

quad cotq(quad x);

DESCRIPTION

These functions are available only for Itanium-based systems.

cot() returns the cotangent of x (x speciﬁed in radians).

cotf() is a float version of cot(); it takes a float argument and returns a float

result.

cotl() is a long double version of cot(); it takes a long double argument and returns a

long double result.

cotw() is an extended version of cot(); it takes an extended argument and returns an

extended result.

cotq() is equivalent to cotl() 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

cotw() or cotq(), 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.

RETURN VALUE

cot(±0) returns ±INFINITY.

If x is ±INFINITY, cot() returns NaN and raises the invalid exception.

x is NaN,

cot() returns NaN.

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

ERRORS

No errors are deﬁned.