value to test
boolean indicating whether the value is finite
var bool = isfinitef( 5.0 );
// returns true
var bool = isfinitef( -2.0e64 );
// returns true
var bool = isfinitef( Infinity );
// returns false
var bool = isfinitef( -Infinity );
// returns false
Tests if a single-precision floating-point numeric value is finite.