--TEST-- Test return type and value for expected input tanh() --INI-- precision = 14 --FILE-- <?php /* * proto float tanh(float number) * Function is implemented in ext/standard/math.c */ $file_path = dirname(__FILE__); require($file_path."/allowed_rounding_error.inc"); echo "tanh .5 = "; var_dump(tanh(0.5)); if (allowed_rounding_error(tanh(0.5), 0.46211715726001)) { echo "Pass\n"; } else { echo "Fail\n"; } echo "tanh -0.5 = "; var_dump(tanh(-0.5)); if (allowed_rounding_error(tanh(-0.5), -0.46211715726001)) { echo "Pass\n"; } else { echo "Fail\n"; } echo "tanh 3 = "; var_dump(tanh(3.0)); if (allowed_rounding_error(tanh(3.0),0.99505475368673 )) { echo "Pass\n"; } else { echo "Fail\n"; } echo "tanh -3 = "; var_dump(tanh(-3.0)); if (allowed_rounding_error(tanh(-3.0),-0.99505475368673 )) { echo "Pass\n"; } else { echo "Fail\n"; } ?> --EXPECTF-- tanh .5 = float(%f) Pass tanh -0.5 = float(%f) Pass tanh 3 = float(%f) Pass tanh -3 = float(%f) Pass