asin(), asinf()

Compute the arcsine of an angle

Synopsis:

#include <math.h>

double asin( double x );

float asinf( float x );

Library:

libm

Description:

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

Returns:

The arcsine, in the range (-PI/2, PI/2).

Examples:

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

int main( void )
{
    printf( "%f\n", asin(.5) );

    return EXIT_SUCCESS;
}

produces the output:

0.523599

Classification:

ANSI

See also:

acos(), atan(), atan2(), errno