ArithmeticProvider::powmod() - Code Metrics - Inspection of "Finished all trig tests" - JordanRL/Fermat - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#139)

by Jordan

created 2022-10-14 06:50 UTC

ArithmeticProvider::powmod() A

↳ Parent: ArithmeticProvider

Complexity

Conditions	2
Paths	2

Size

Total Lines	14
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
cc	2
eloc	9
c	0
b	0
f	0
nc	2
nop	4
dl	0
loc	14
ccs	0
cts	9
cp	0
crap	6
rs	9.9666

<?php

namespace Samsara\Fermat\Provider;

use Decimal\Decimal;
use Samsara\Exceptions\UsageError\IntegrityConstraint;

/**
 *
 */
class ArithmeticProvider
{

    /**
     * @param string $number1
     * @param string $number2
     * @param $scale
     * @return string
     */
    public static function add(string $number1, string $number2, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($number1);
            $intDigits2 = self::integerDigits($number2);
            $decimalScale = max($intDigits1, $intDigits2);
            $decimalScale = $decimalScale+$scale+1;
            $decimalScale = max($decimalScale, strlen($number1)+1, strlen($number2)+1);
            $number1 = new Decimal($number1, $decimalScale);
            $number2 = new Decimal($number2, $decimalScale);

            $result = $number1->add($number2);

            $result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
        } else {
            $result = \bcadd($number1, $number2, $scale);
        }
        return $result;
    }

    /**
     * @param string $left
     * @param string $right
     * @param $scale
     * @return string
     */
    public static function subtract(string $left, string $right, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($left);
            $intDigits2 = self::integerDigits($right);
            $decimalScale = max($intDigits1, $intDigits2);
            $decimalScale = $decimalScale+$scale+1;
            $decimalScale = max($decimalScale, strlen($left)+1, strlen($right)+1);
            $number1 = new Decimal($left, $decimalScale);
            $number2 = new Decimal($right, $decimalScale);

            $result = $number1->sub($number2);

            $result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
        } else {
            $result = \bcsub($left, $right, $scale);
        }
        return $result;
    }

    /**
     * @param string $number1
     * @param string $number2
     * @param $scale
     * @return string
     */
    public static function multiply(string $number1, string $number2, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($number1);
            $intDigits2 = self::integerDigits($number2);
            $decimalScale = max($intDigits1, $intDigits2);
            $decimalScale = $decimalScale+$scale+1;
            $decimalScale = max($decimalScale, strlen($number1)+1, strlen($number2)+1);
            $number1 = new Decimal($number1, $decimalScale);
            $number2 = new Decimal($number2, $decimalScale);

            $result = $number1->mul($number2);

            $result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
        } else {
            $result = \bcmul($number1, $number2, $scale);
        }
        return $result;
    }

    /**
     * @param string $numerator
     * @param string $denominator
     * @param $scale
     * @return string
     */
    public static function divide(string $numerator, string $denominator, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($numerator);
            $intDigits2 = self::integerDigits($denominator);
            $decimalScale = max($intDigits1, $intDigits2);
            $decimalScale = $decimalScale+$scale+1;
            $decimalScale = max($decimalScale, strlen($numerator)+1, strlen($denominator)+1);
            $number1 = new Decimal($numerator, $decimalScale);
            $number2 = new Decimal($denominator, $decimalScale);

            $result = $number1->div($number2);

            $result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
        } else {
            $result = \bcdiv($numerator, $denominator, $scale);
        }
        return $result;
    }

    /**
     * @param string $base
     * @param string $exponent
     * @param $scale
     * @return string
     */
    public static function pow(string $base, string $exponent, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($base);
            $intDigits2 = self::integerDigits($exponent);
            $decimalScale = max($intDigits1, $intDigits2);
            $decimalScale = $decimalScale+$scale+1;
            $decimalScale = max($decimalScale, strlen($base)+1, strlen($exponent)+1);
            $number1 = new Decimal($base, $decimalScale);
            $number2 = new Decimal($exponent, $decimalScale);

            $result = $number1->pow($number2);

            $result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
        } else {
            $result = \bcpow($base, $exponent, $scale);
        }
        return $result;
    }

    /**
     * @param string $number
     * @param $scale
     * @return string
     */
    public static function squareRoot(string $number, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($number);
            $decimalScale = $intDigits1+$scale+1;
            $decimalScale = max($decimalScale, strlen($number)+1);
            $number = new Decimal($number, $decimalScale);

            $result = $number->sqrt();

            $result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
        } else {
            $result = \bcsqrt($number, $scale);
        }
        return $result;
    }

    /**
     * @param string $number
     * @param $modulo
     * @return string
     */
    public static function modulo(string $number, $modulo)
    {
        if (extension_loaded('decimal')) {
            $decimalScale = (max(strlen($modulo)*2, strlen($number)*2));
            $number1 = new Decimal($number, $decimalScale);
            $number2 = new Decimal($modulo, $decimalScale);

            $result = $number1->mod($number2);

            $result = $result->toString();
        } else {
            $result = \bcmod($number, $modulo);
        }
        return $result;
    }

    /**
     * @param string $left
     * @param string $right
     * @param $scale
     * @return int
     */
    public static function compare(string $left, string $right, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $intDigits1 = self::integerDigits($left);
            $intDigits2 = self::integerDigits($right);
            $decimalScale = max($intDigits1, $intDigits2);
            $decimalScale = $decimalScale+$scale+1;
            $decimalScale = max($decimalScale, strlen($left)+1, strlen($right)+1);
            $number1 = new Decimal($left, $decimalScale);
            $number2 = new Decimal($right, $decimalScale);

            $result = $number1->compareTo($number2);
        } else {
            $result = \bccomp($left, $right, $scale);
        }
        return $result;
    }

    /**
     * @param string $left
     * @param string $right
     * @param string $modulus
     * @param $scale
     * @return string
     */
    public static function powmod(string $left, string $right, string $modulus, $scale = 100)
    {
        if (extension_loaded('decimal')) {
            $number1 = new Decimal($left, $scale+2);
            $number2 = new Decimal($right, $scale+2);
            $number3 = new Decimal($modulus, $scale+2);

            $result = $number1->pow($number2)->mod($number3);

            $result = $result->toFixed($scale+2);
        } else {
            $result = \bcpowmod($left, $right, $modulus, $scale);
        }
        return $result;
    }

    private static function integerDigits(string $number): int
    {
        return strlen($number);
    }

}

1		<?php
2
3		namespace Samsara\Fermat\Provider;
4
5		use Decimal\Decimal;
6		use Samsara\Exceptions\UsageError\IntegrityConstraint;
7
8		/**
9		*
10		*/
11		class ArithmeticProvider
12		{
13
14		/**
15		* @param string $number1
16		* @param string $number2
17		* @param $scale
18		* @return string
19		*/
20	586	public static function add(string $number1, string $number2, $scale = 100)
21		{
22	586	if (extension_loaded('decimal')) {
23	34	$intDigits1 = self::integerDigits($number1);
24	34	$intDigits2 = self::integerDigits($number2);
25	34	$decimalScale = max($intDigits1, $intDigits2);
26	34	$decimalScale = $decimalScale+$scale+1;
27	34	$decimalScale = max($decimalScale, strlen($number1)+1, strlen($number2)+1);
28	34	$number1 = new Decimal($number1, $decimalScale);
29	34	$number2 = new Decimal($number2, $decimalScale);
30
31	34	$result = $number1->add($number2);
32
33	34	$result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
34		} else {
35	552	$result = \bcadd($number1, $number2, $scale);
36		}
37	586	return $result;
38		}
39
40		/**
41		* @param string $left
42		* @param string $right
43		* @param $scale
44		* @return string
45		*/
46	707	public static function subtract(string $left, string $right, $scale = 100)
47		{
48	707	if (extension_loaded('decimal')) {
49	34	$intDigits1 = self::integerDigits($left);
50	34	$intDigits2 = self::integerDigits($right);
51	34	$decimalScale = max($intDigits1, $intDigits2);
52	34	$decimalScale = $decimalScale+$scale+1;
53	34	$decimalScale = max($decimalScale, strlen($left)+1, strlen($right)+1);
54	34	$number1 = new Decimal($left, $decimalScale);
55	34	$number2 = new Decimal($right, $decimalScale);
56
57	34	$result = $number1->sub($number2);
58
59	34	$result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
60		} else {
61	673	$result = \bcsub($left, $right, $scale);
62		}
63	707	return $result;
64		}
65
66		/**
67		* @param string $number1
68		* @param string $number2
69		* @param $scale
70		* @return string
71		*/
72	802	public static function multiply(string $number1, string $number2, $scale = 100)
73		{
74	802	if (extension_loaded('decimal')) {
75	63	$intDigits1 = self::integerDigits($number1);
76	63	$intDigits2 = self::integerDigits($number2);
77	63	$decimalScale = max($intDigits1, $intDigits2);
78	63	$decimalScale = $decimalScale+$scale+1;
79	63	$decimalScale = max($decimalScale, strlen($number1)+1, strlen($number2)+1);
80	63	$number1 = new Decimal($number1, $decimalScale);
81	63	$number2 = new Decimal($number2, $decimalScale);
82
83	63	$result = $number1->mul($number2);
84
85	63	$result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
86		} else {
87	739	$result = \bcmul($number1, $number2, $scale);
88		}
89	802	return $result;
90		}
91
92		/**
93		* @param string $numerator
94		* @param string $denominator
95		* @param $scale
96		* @return string
97		*/
98	931	public static function divide(string $numerator, string $denominator, $scale = 100)
99		{
100	931	if (extension_loaded('decimal')) {
101	72	$intDigits1 = self::integerDigits($numerator);
102	72	$intDigits2 = self::integerDigits($denominator);
103	72	$decimalScale = max($intDigits1, $intDigits2);
104	72	$decimalScale = $decimalScale+$scale+1;
105	72	$decimalScale = max($decimalScale, strlen($numerator)+1, strlen($denominator)+1);
106	72	$number1 = new Decimal($numerator, $decimalScale);
107	72	$number2 = new Decimal($denominator, $decimalScale);
108
109	72	$result = $number1->div($number2);
110
111	72	$result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
112		} else {
113	859	$result = \bcdiv($numerator, $denominator, $scale);
114		}
115	931	return $result;
116		}
117
118		/**
119		* @param string $base
120		* @param string $exponent
121		* @param $scale
122		* @return string
123		*/
124	508	public static function pow(string $base, string $exponent, $scale = 100)
125		{
126	508	if (extension_loaded('decimal')) {
127	18	$intDigits1 = self::integerDigits($base);
128	18	$intDigits2 = self::integerDigits($exponent);
129	18	$decimalScale = max($intDigits1, $intDigits2);
130	18	$decimalScale = $decimalScale+$scale+1;
131	18	$decimalScale = max($decimalScale, strlen($base)+1, strlen($exponent)+1);
132	18	$number1 = new Decimal($base, $decimalScale);
133	18	$number2 = new Decimal($exponent, $decimalScale);
134
135	18	$result = $number1->pow($number2);
136
137	18	$result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
138		} else {
139	490	$result = \bcpow($base, $exponent, $scale);
140		}
141	508	return $result;
142		}
143
144		/**
145		* @param string $number
146		* @param $scale
147		* @return string
148		*/
149	74	public static function squareRoot(string $number, $scale = 100)
150		{
151	74	if (extension_loaded('decimal')) {
152		$intDigits1 = self::integerDigits($number);
153		$decimalScale = $intDigits1+$scale+1;
154		$decimalScale = max($decimalScale, strlen($number)+1);
155		$number = new Decimal($number, $decimalScale);
156
157		$result = $number->sqrt();
158
159		$result = $result->toFixed($scale, false, Decimal::ROUND_TRUNCATE);
160		} else {
161	74	$result = \bcsqrt($number, $scale);
162		}
163	74	return $result;
164		}
165
166		/**
167		* @param string $number
168		* @param $modulo
169		* @return string
170		*/
171		public static function modulo(string $number, $modulo)
172		{
173		if (extension_loaded('decimal')) {
174		$decimalScale = (max(strlen($modulo)2, strlen($number)2));
175		$number1 = new Decimal($number, $decimalScale);
176		$number2 = new Decimal($modulo, $decimalScale);
177
178		$result = $number1->mod($number2);
179
180		$result = $result->toString();
181		} else {
182		$result = \bcmod($number, $modulo);
183		}
184		return $result;
185		}
186
187		/**
188		* @param string $left
189		* @param string $right
190		* @param $scale
191		* @return int
192		*/
193	1903	public static function compare(string $left, string $right, $scale = 100)
194		{
195	1903	if (extension_loaded('decimal')) {
196	166	$intDigits1 = self::integerDigits($left);
197	166	$intDigits2 = self::integerDigits($right);
198	166	$decimalScale = max($intDigits1, $intDigits2);
199	166	$decimalScale = $decimalScale+$scale+1;
200	166	$decimalScale = max($decimalScale, strlen($left)+1, strlen($right)+1);
201	166	$number1 = new Decimal($left, $decimalScale);
202	166	$number2 = new Decimal($right, $decimalScale);
203
204	166	$result = $number1->compareTo($number2);
205		} else {
206	1737	$result = \bccomp($left, $right, $scale);
207		}
208	1903	return $result;
209		}
210
211		/**
212		* @param string $left
213		* @param string $right
214		* @param string $modulus
215		* @param $scale
216		* @return string
217		*/
218		public static function powmod(string $left, string $right, string $modulus, $scale = 100)
219		{
220		if (extension_loaded('decimal')) {
221		$number1 = new Decimal($left, $scale+2);
222		$number2 = new Decimal($right, $scale+2);
223		$number3 = new Decimal($modulus, $scale+2);
224
225		$result = $number1->pow($number2)->mod($number3);
226
227		$result = $result->toFixed($scale+2);
228		} else {
229		$result = \bcpowmod($left, $right, $modulus, $scale);
230		}
231		return $result;
232		}
233
234	174	private static function integerDigits(string $number): int
235		{
236	174	return strlen($number);
237		}
238
239		}

JordanRL / Fermat

Pull Request — master (#139)

ArithmeticProvider::powmod() A

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