// This code is Public Domain. Use, modify, and redistribute at will.
// ----------------------------------------------------------------------------
-// ----------------------------------------------------------------------------
-// C++
-
-float atan( float x ) { /* TODO */ };
-long double atan( long double x ) { /* TODO */ };
-
-// ----------------------------------------------------------------------------
-// Standard C
-
double atan( double x ) { /* TODO */ };
float atanf( float x ) { /* TODO */ };
long double atanl( long double x ) { /* TODO */ };