diff options
Diffstat (limited to 'ext/standard/math.c')
| -rw-r--r-- | ext/standard/math.c | 38 |
1 files changed, 1 insertions, 37 deletions
diff --git a/ext/standard/math.c b/ext/standard/math.c index 2be049f200..65702ddf14 100644 --- a/ext/standard/math.c +++ b/ext/standard/math.c @@ -604,43 +604,7 @@ PHP_FUNCTION(pow) return; } - /* make sure we're dealing with numbers */ - convert_scalar_to_number(zbase TSRMLS_CC); - convert_scalar_to_number(zexp TSRMLS_CC); - - /* if both base and exponent were longs, we'll try to get a long out */ - if (Z_TYPE_P(zbase) == IS_LONG && Z_TYPE_P(zexp) == IS_LONG && Z_LVAL_P(zexp) >= 0) { - long l1 = 1, l2 = Z_LVAL_P(zbase), i = Z_LVAL_P(zexp); - - if (i == 0) { - RETURN_LONG(1L); - } else if (l2 == 0) { - RETURN_LONG(0); - } - - /* calculate pow(long,long) in O(log exp) operations, bail if overflow */ - while (i >= 1) { - long overflow; - double dval = 0.0; - - if (i % 2) { - --i; - ZEND_SIGNED_MULTIPLY_LONG(l1,l2,l1,dval,overflow); - if (overflow) RETURN_DOUBLE(dval * pow(l2,i)); - } else { - i /= 2; - ZEND_SIGNED_MULTIPLY_LONG(l2,l2,l2,dval,overflow); - if (overflow) RETURN_DOUBLE((double)l1 * pow(dval,i)); - } - if (i == 0) { - RETURN_LONG(l1); - } - } - } - convert_to_double(zbase); - convert_to_double(zexp); - - RETURN_DOUBLE(pow(Z_DVAL_P(zbase), Z_DVAL_P(zexp))); + pow_function(return_value, zbase, zexp TSRMLS_CC); } /* }}} */ |