FLT_ROUNDS 2178 Zend/zend_strtod.c && FLT_ROUNDS == 1 FLT_ROUNDS 2469 Zend/zend_strtod.c switch(FLT_ROUNDS) { FLT_ROUNDS 2478 Zend/zend_strtod.c if (FLT_ROUNDS == 0)