COS

Section: Linux Programmer's Manual (3)
Updated: 2002-07-27
Index Return to Main Contents
 

NAME

cos, cosf, cosl - cosine function  

SYNOPSIS

#include <math.h>

double cos(double x);

float cosf(float x);
long double cosl(long double x);

Link with -lm.  

DESCRIPTION

The cos() function returns the cosine of x, where x is given in radians.  

RETURN VALUE

The cos() function returns a value between -1 and 1.  

CONFORMING TO

SVr4, 4.3BSD, C99. The float and long double variants are C99 requirements.  

SEE ALSO

acos(3), asin(3), atan(3), atan2(3), ccos(3), sin(3), tan(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
SEE ALSO

linux.jgfs.net manual pages