cos(), cosf()

Compute the cosine of an angle

Synopsis:

#include <math.h>

double cos( double x );

float cosf( float x );

Library:

libm

Description:

These functions compute the cosine of x (specified in radians).

An argument with a large magnitude may yield results with little or no significance.

Returns:

The cosine of x.

Examples:

#include <math.h>
#include <stdio.h>
#include <stdlib.h>

int main( void )
{
    double value;

    value = cos( M_PI );
    printf( "value = %f\n", value );
    
    return EXIT_SUCCESS;
}

produces the output:

value = -1.000000

Classification:

ANSI

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	No
Thread	Yes