/* ----------------------------------------------------------------------------
 * $Id$
 * ----------------------------------------------------------------------------
 * Public Domain C Library - http://pdclib.sourceforge.net
 * This code is Public Domain. Use, modify, and redistribute at will.
 * --------------------------------------------------------------------------*/

double acos( double x ) { /* TODO */ };
float acosf( float x ) { /* TODO */ };
long double acosl( long double x ) { /* TODO */ };