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Code Editor : bcmath.php
<?php include_once 'common.php'; //include_once 'Math/Integer/common.php'; bcscale(0); class Math_Integer_BCMATH extends Math_Integer_Common {/*{{{*/ function Math_Integer_BCMATH($value) {/*{{{*/ $this->setValue($value); }/*}}}*/ function makeClone() {/*{{{*/ return new Math_Integer_BCMATH($this->toString()); }/*}}}*/ function setValue($value) {/*{{{*/ if ($this->_is($value, 'Math_Integer_BCMATH')) { $this->setValue($value->toString()); } elseif (is_scalar($value)) { $this->_value = $value; } else { $this->_value = null; } }/*}}}*/ function negate() {/*{{{*/ $newval = bcmul($this->getValue(), -1); $this->setValue($newval); return true; }/*}}}*/ function abs() {/*{{{*/ if ($this->isNegative()) { return $this->negate(); } return true; }/*}}}*/ function fact() {/*{{{*/ if ($this->isNegative()) { return PEAR::raiseError('Factorial of a negative number is undefined'); } if ($this->isZero()) { $this->setValue(1); return true; } else { $fact = 1; $val = $this->getValue(); while (bccomp($val, 1) != 0) { $fact = bcmul($fact, $val); $val = bcsub($val, 1); } $this->setValue($fact); return true; } }/*}}}*/ function add(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { return PEAR::raiseError('Paramater is not a Math_Integer_BCMATH object'); } $newval = bcadd($this->getValue(), $int->getValue()); $this->setValue($newval); return true; }/*}}}*/ function inc() {/*{{{*/ $newval = bcadd($this->getValue(), 1); $this->setValue($newval); return true; }/*}}}*/ function sub(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { return PEAR::raiseError('Paramater is not a Math_Integer_BCMATH object'); } $newval = bcsub($this->getValue(), $int->getValue()); $this->setValue($newval); return true; }/*}}}*/ function dec() {/*{{{*/ $newval = bcsub($this->getValue(), 1); $this->setValue($newval); return true; }/*}}}*/ function mul(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { return PEAR::raiseError('Paramater is not a Math_Integer_BCMATH object'); } $newval = bcmul($this->getValue(), $int->getValue()); $this->setValue($newval); return true; }/*}}}*/ function div(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { return PEAR::raiseError('Paramater is not a Math_Integer_BCMATH object'); } if ($int->isZero()) { return PEAR::raiseError('Division by zero is undefined'); } $newval = bcdiv($this->getValue(), $int->getValue()); $this->setValue($newval); return true; }/*}}}*/ function pow(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { return PEAR::raiseError('Exponent is not a Math_Integer_BCMATH object'); } $newval = bcpow($this->getValue(), $int->getValue()); $this->setValue($newval); return true; }/*}}}*/ function powmod(&$int, &$mod) {/*{{{*/ $err = ''; if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { $err .= 'Exponent is not a Math_Integer_BCMATH object.'; } if (!empty($err)) { $err .= ' '; } if (!$this->_is(&$mod, 'Math_Integer_BCMATH')) { $err .= 'Modulus is not a Math_Integer_BCMATH object.'; } else { if ($mod->isZero() || $mod->isNegative()) { $err .= 'Modulus object must be positive.'; } } if (!empty($err)) { return PEAR::raiseError($err); } $newval = bcpowmod($this->getValue(), $int->getValue(), $mod->getValue()); $this->setValue($newval); return true; }/*}}}*/ function sqrt() {/*{{{*/ if ($this->isZero()) { return true; } elseif ($this->isNegative()) { return PEAR::raiseError('Cannot take square root of a negative number'); } else { $newval = bcsqrt($this->getValue(), $int->getValue(), $mod->getValue()); $this->setValue($newval); return true; } }/*}}}*/ function mod(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { $err = 'Modulus is not a Math_Integer_BCMATH object.'; } else { if ($int->isZero() || $int->isNegative()) { $err = 'Modulus object must be positive.'; } } if (!empty($err)) { return PEAR::raiseError($err); } $newval = bcmod($this->getValue(), $int->getValue()); $this->setValue($newval); return true; }/*}}}*/ function compare(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { return PEAR::raiseError('Paramater is not a Math_Integer_BCMATH object'); } return bccomp($this->getValue(), $int->getValue()); }/*}}}*/ function sign() {/*{{{*/ if ($this->isNegative()) { return -1; } elseif ($this->isZero()) { return 0; } else { return 1; } }/*}}}*/ function &gcd(&$int) {/*{{{*/ if (!$this->_is(&$int, 'Math_Integer_BCMATH')) { $err = 'Modulus is not a Math_Integer_BCMATH object.'; } // if both are the same, return either if ($this->compare($int) == 0) { return new Math_Integer_GMP($int); } $int1 = $this->makeClone(); $int2 = $int->makeClone(); // make sure both are positive if ($int1->isNegative()) { $int1->negate(); } if ($int2->isNegative()) { $int2->negate(); } if ($int1->compare($int2) == -1) { $tmp = $int1; $int1 = $int2; $int2 = $tmp; } $mod = $int1->mod($int2); if (PEAR::isError($mod)) { return $mod; } elseif (!$int1->isZero()) { return $int2->gcd($int1); } else { return $int2; } }/*}}}*/ function isOdd() {/*{{{*/ return bcmod($this->getValue(), 2) != 0; }/*}}}*/ function isEven() {/*{{{*/ return bcmod($this->getValue(), 2) == 0; }/*}}}*/ function isPositive() {/*{{{*/ return bccomp($this->getValue(), 0) == 1; }/*}}}*/ function isNegative() {/*{{{*/ return bccomp($this->getValue(), 0) == -1; }/*}}}*/ function isZero() {/*{{{*/ return bccomp($this->getValue(), 0) == 0; }/*}}}*/ }/*}}}*/ ?>
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