FLT_ROUNDS 2177 Zend/zend_strtod.c && FLT_ROUNDS == 1 FLT_ROUNDS 2468 Zend/zend_strtod.c switch(FLT_ROUNDS) { FLT_ROUNDS 2477 Zend/zend_strtod.c if (FLT_ROUNDS == 0)