Viewing file:  Math.php (4.22 KB) -rw-r--r--
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<?php
namespace Maba\Component\Math;
class Math implements MathInterface
{
protected $math;
public function __construct(BasicMathInterface $math)
{
$this->math = $math;
}
public function add($first, $second)
{
return $this->math->add($first, $second);
}
public function sub($first, $second)
{
return $this->math->sub($first, $second);
}
public function div($first, $second)
{
return $this->math->div($first, $second);
}
public function mul($first, $second)
{
return $this->math->mul($first, $second);
}
public function pow($first, $second)
{
return $this->math->pow($first, $second);
}
public function mod($first, $second)
{
return $this->math->mod($first, $second);
}
public function comp($first, $second)
{
return $this->math->comp($first, $second);
}
public function negate($operand)
{
return $this->mul($operand, '-1');
}
public function abs($operand)
{
return $this->isGte($operand, '0') ? $operand : $this->negate($operand);
}
public function isEqual($first, $second)
{
return $this->comp($first, $second) === 0;
}
public function isGt($first, $second)
{
return $this->comp($first, $second) > 0;
}
public function isLt($first, $second)
{
return $this->comp($first, $second) < 0;
}
public function isGte($first, $second)
{
return $this->comp($first, $second) >= 0;
}
public function isLte($first, $second)
{
return $this->comp($first, $second) <= 0;
}
public function isPositive($operand)
{
return $this->isGt($operand, '0');
}
public function isNegative($operand)
{
return $this->isLt($operand, '0');
}
public function isZero($operand)
{
return $this->isEqual($operand, '0');
}
public function round($operand, $precision = 0, $mode = PHP_ROUND_HALF_UP)
{
$multiplier = $this->pow('10', $precision);
$operand = $this->mul($operand, $multiplier);
if (($fraction = strstr($operand, '.')) !== false) {
$fraction = '0' . $fraction;
$positive = $this->isPositive($operand);
$operand = $positive ? $this->sub($operand, $fraction) : $this->add($operand, $fraction);
if (
$mode === PHP_ROUND_HALF_UP && $this->isGte($fraction, '0.5')
|| $this->isGt($fraction, '0.5')
|| (
$mode === PHP_ROUND_HALF_EVEN
&& $this->isEqual($fraction, '0.5')
&& !$this->isZero($this->mod($operand, 2))
)
|| (
$mode === PHP_ROUND_HALF_ODD
&& $this->isEqual($fraction, '0.5')
&& $this->isZero($this->mod($operand, 2))
)
) {
$operand = $positive ? $this->add($operand, '1') : $this->sub($operand, '1');
}
}
return $this->div($operand, $multiplier);
}
public function floor($operand, $precision = 0)
{
$multiplier = $this->pow('10', $precision);
$operand = $this->mul($operand, $multiplier);
if (($fraction = strstr($operand, '.')) !== false) {
$fraction = '0' . $fraction;
if ($this->isPositive($fraction)) {
$operand = $this->isPositive($operand)
? $this->sub($operand, $fraction)
: $this->sub($this->add($operand, $fraction), '1');
}
}
return $this->div($operand, $multiplier);
}
public function ceil($operand, $precision = 0)
{
$multiplier = $this->pow('10', $precision);
$operand = $this->mul($operand, $multiplier);
if (($fraction = strstr($operand, '.')) !== false) {
$fraction = '0' . $fraction;
if ($this->isPositive($fraction)) {
$operand = $this->isPositive($operand)
? $this->add($this->sub($operand, $fraction), '1')
: $this->add($operand, $fraction);
}
}
return $this->div($operand, $multiplier);
}
}
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