1--TEST-- 2Simple math tests 3--FILE-- 4<?php 5 6define('LONG_MAX', is_int(5000000000)? 9223372036854775807 : 0x7FFFFFFF); 7define('LONG_MIN', -LONG_MAX - 1); 8printf("%d,%d,%d,%d\n",is_int(LONG_MIN ),is_int(LONG_MAX ), 9 is_int(LONG_MIN-1),is_int(LONG_MAX+1)); 10 11var_dump(1 === abs(-1)); 12var_dump(1.5 === abs(-1.5)); 13var_dump(1 === abs("-1")); 14var_dump(1.5 === abs("-1.5")); 15var_dump(-LONG_MIN+1 === abs(LONG_MIN-1)); 16var_dump(-LONG_MIN === abs(LONG_MIN)); 17var_dump(-(LONG_MIN+1) === abs(LONG_MIN+1)); 18 19?> 20--EXPECT-- 211,1,0,0 22bool(true) 23bool(true) 24bool(true) 25bool(true) 26bool(true) 27bool(true) 28bool(true) 29