BcMath::isEnabled() - Code Metrics - TheDevNetwork/PhpTypes - Measure and Improve Code Quality continuously with Scrutinizer

BcMath::isEnabled() A
last analyzed 2017-11-18 07:09 UTC

↳ Parent: BcMath

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	4
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	1
eloc	2
nc	1
nop	0
crap	1

<?php

namespace Tdn\PhpTypes\Math\Library;

use Tdn\PhpTypes\Type\StringType;

/**
 * Class BcMath.
 */
class BcMath implements MathLibraryInterface
{
    /**
     * @var int
     */
    private $roundingStrategy;

    /**
     * @param int $roundingStrategy
     */
    public function __construct(int $roundingStrategy)
    {
        $this->roundingStrategy = $roundingStrategy;
    }

    /**
     * Add two arbitrary precision numbers.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     * @param int    $precision
     *
     * @return string
     */
    public function add(string $leftOperand, string $rightOperand, int $precision = 0): string
    {
        $precision = $this->getBcPrecision($leftOperand, $precision);

        return \bcadd($leftOperand, $rightOperand, $precision);
    }

    /**
     * Subtract two arbitrary precision numbers.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     * @param int    $precision
     *
     * @return string
     */
    public function subtract(string $leftOperand, string $rightOperand, int $precision = 0): string
    {
        $precision = $this->getBcPrecision($leftOperand, $precision);

        return \bcsub($leftOperand, $rightOperand, $precision);
    }

    /**
     * Multiply two arbitrary precision numbers.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     * @param int    $precision
     *
     * @return string
     */
    public function multiply(string $leftOperand, string $rightOperand, int $precision = 0): string
    {
        $precision = $this->getBcPrecision($leftOperand, $precision);

        return bcmul($leftOperand, $rightOperand, $precision);
    }

    /**
     * Divide two arbitrary precision numbers.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     * @param int    $precision
     *
     * @return string
     */
    public function divide(string $leftOperand, string $rightOperand, int $precision = 0): string
    {
        $precision = $this->getBcPrecision($leftOperand, $precision);

        return bcdiv($leftOperand, $rightOperand, $precision);
    }

    /**
     * Compare two arbitrary precision numbers.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     * @param int    $precision
     *
     * @return string
     */
    public function compare(string $leftOperand, string $rightOperand, int $precision = 0): string
    {
        if ($this->isVersionComparison($leftOperand, $rightOperand)) {
            throw new \RuntimeException('BcMath cannot do version compare.');
        }

        $precision = $this->getBcPrecision($leftOperand, $precision);

        return strval(bccomp($leftOperand, $rightOperand, $precision));
    }

    /**
     * Get modulus of an arbitrary precision number.
     *
     * @param string $operand
     * @param string $modulus
     * @param int    $precision
     *
     * @return string
     */
    public function modulus(string $operand, string $modulus, int $precision = 0): string
    {
        if ($precision > 0) {
            throw new \RuntimeException('Precision is not supported. Use Spl::modulus, it uses fmod.');
        }

        return bcmod($operand, $modulus);
    }

    /**
     * Raise an arbitrary precision number to another.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     * @param int    $precision
     *
     * @return string
     */
    public function power(string $leftOperand, string $rightOperand, int $precision = 0): string
    {
        $precision = $this->getBcPrecision($leftOperand, $precision);

        return bcpow($leftOperand, $rightOperand, $precision);
    }

    /**
     * Get the square root of an arbitrary precision number.
     *
     * @param string $operand
     * @param int    $precision
     *
     * @return string
     */
    public function squareRoot(string $operand, int $precision = 0): string
    {
        $bcPrecision = $this->getBcPrecision($operand, $precision) + 1;

        return (string) round(bcsqrt($operand, $bcPrecision), $precision, $this->roundingStrategy);
    }

    /**
     * Returns absolute value of operand.
     *
     * @param string $operand
     *
     * @return string
     */
    public function absolute(string $operand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * Negates a number. Opposite of absolute/abs.
     *
     * @param string $operand
     *
     * @return string
     */
    public function negate(string $operand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * Returns the factorial of operand.
     *
     * @param string $operand
     *
     * @return string
     */
    public function factorial(string $operand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * Greatest common divisor.
     *
     * @param string $leftOperand
     * @param string $rightOperand
     *
     * @return string
     */
    public function gcd(string $leftOperand, string $rightOperand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * Calculates to the nth root.
     *
     * @param string $operand
     * @param int    $nth
     *
     * @return string
     */
    public function root(string $operand, int $nth): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * Gets the next prime after operand.
     *
     * @param string $operand
     *
     * @return string
     */
    public function nextPrime(string $operand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * @param string $operand
     * @param int    $reps
     *
     * @return bool
     */
    public function isPrime(string $operand, int $reps = 10): bool
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * Checks if operand is perfect square.
     *
     * @param string $operand
     * @param int    $precision
     *
     * @return bool
     */
    public function isPerfectSquare(string $operand, int $precision = 0): bool
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * The gamma function.
     *
     * @param string $operand
     *
     * @return string
     */
    public function gamma(string $operand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * The log-gamma function.
     *
     * @param string $operand
     *
     * @return string
     */
    public function logGamma(string $operand): string
    {
        throw $this->createInvalidLibraryException(__FUNCTION__);
    }

    /**
     * @param string $type
     *
     * @return bool
     */
    public function supportsOperationType(string $type): bool
    {
        //Supports both float and int.
        return true;
    }

    /**
     * @return bool
     */
    public function isEnabled(): bool
    {
        return extension_loaded('bcmath');
    }

    /**
     * Returns BCMath Precision.
     *
     * It differs from standard PHP precision in that it includes the numbers before the decimal period.
     * It always uses the left most operand to calculate precision.
     *
     * @param string $leftOperand
     * @param int    $precision
     *
     * @return int
     */
    private function getBcPrecision(string $leftOperand, int $precision = 0): int
    {
        if ($precision > 0) {
            $operand = StringType::create($leftOperand);
            if ($operand->contains('.')) {
                return $operand->countSubstr('.') + $precision;
            }
        }

        return $precision;
    }

    /**
     * @param string $leftOperand
     * @param string $rightOperand
     *
     * @return bool
     */
    private function isVersionComparison(string $leftOperand, string $rightOperand): bool
    {
        return (StringType::create($leftOperand)->isSemVer()->isTrue()) ||
        (StringType::create($rightOperand)->isSemVer()->isTrue());
    }

    /**
     * @param string $methodName
     *
     * @return \RuntimeException
     */
    private function createInvalidLibraryException(string $methodName): \RuntimeException
    {
        return new \RuntimeException(
            sprintf('Not a valid library for %s.', $methodName)
        );
    }
}


1		<?php
2
3		namespace Tdn\PhpTypes\Math\Library;
4
5		use Tdn\PhpTypes\Type\StringType;
6
7		/**
8		* Class BcMath.
9		*/
10		class BcMath implements MathLibraryInterface
11		{
12		/**
13		* @var int
14		*/
15		private $roundingStrategy;
16
17		/**
18		* @param int $roundingStrategy
19		*/
20	105	public function __construct(int $roundingStrategy)
21		{
22	105	$this->roundingStrategy = $roundingStrategy;
23	105	}
24
25		/**
26		* Add two arbitrary precision numbers.
27		*
28		* @param string $leftOperand
29		* @param string $rightOperand
30		* @param int $precision
31		*
32		* @return string
33		*/
34	4	public function add(string $leftOperand, string $rightOperand, int $precision = 0): string
35		{
36	4	$precision = $this->getBcPrecision($leftOperand, $precision);
37
38	4	return \bcadd($leftOperand, $rightOperand, $precision);
39		}
40
41		/**
42		* Subtract two arbitrary precision numbers.
43		*
44		* @param string $leftOperand
45		* @param string $rightOperand
46		* @param int $precision
47		*
48		* @return string
49		*/
50	4	public function subtract(string $leftOperand, string $rightOperand, int $precision = 0): string
51		{
52	4	$precision = $this->getBcPrecision($leftOperand, $precision);
53
54	4	return \bcsub($leftOperand, $rightOperand, $precision);
55		}
56
57		/**
58		* Multiply two arbitrary precision numbers.
59		*
60		* @param string $leftOperand
61		* @param string $rightOperand
62		* @param int $precision
63		*
64		* @return string
65		*/
66	4	public function multiply(string $leftOperand, string $rightOperand, int $precision = 0): string
67		{
68	4	$precision = $this->getBcPrecision($leftOperand, $precision);
69
70	4	return bcmul($leftOperand, $rightOperand, $precision);
71		}
72
73		/**
74		* Divide two arbitrary precision numbers.
75		*
76		* @param string $leftOperand
77		* @param string $rightOperand
78		* @param int $precision
79		*
80		* @return string
81		*/
82	4	public function divide(string $leftOperand, string $rightOperand, int $precision = 0): string
83		{
84	4	$precision = $this->getBcPrecision($leftOperand, $precision);
85
86	4	return bcdiv($leftOperand, $rightOperand, $precision);
87		}
88
89		/**
90		* Compare two arbitrary precision numbers.
91		*
92		* @param string $leftOperand
93		* @param string $rightOperand
94		* @param int $precision
95		*
96		* @return string
97		*/
98	5	public function compare(string $leftOperand, string $rightOperand, int $precision = 0): string
99		{
100	5	if ($this->isVersionComparison($leftOperand, $rightOperand)) {
101	2	throw new \RuntimeException('BcMath cannot do version compare.');
102		}
103
104	4	$precision = $this->getBcPrecision($leftOperand, $precision);
105
106	4	return strval(bccomp($leftOperand, $rightOperand, $precision));
107		}
108
109		/**
110		* Get modulus of an arbitrary precision number.
111		*
112		* @param string $operand
113		* @param string $modulus
114		* @param int $precision
115		*
116		* @return string
117		*/
118	5	public function modulus(string $operand, string $modulus, int $precision = 0): string
119		{
120	5	if ($precision > 0) {
121	3	throw new \RuntimeException('Precision is not supported. Use Spl::modulus, it uses fmod.');
122		}
123
124	3	return bcmod($operand, $modulus);
125		}
126
127		/**
128		* Raise an arbitrary precision number to another.
129		*
130		* @param string $leftOperand
131		* @param string $rightOperand
132		* @param int $precision
133		*
134		* @return string
135		*/
136	4	public function power(string $leftOperand, string $rightOperand, int $precision = 0): string
137		{
138	4	$precision = $this->getBcPrecision($leftOperand, $precision);
139
140	4	return bcpow($leftOperand, $rightOperand, $precision);
141		}
142
143		/**
144		* Get the square root of an arbitrary precision number.
145		*
146		* @param string $operand
147		* @param int $precision
148		*
149		* @return string
150		*/
151	4	public function squareRoot(string $operand, int $precision = 0): string
152		{
153	4	$bcPrecision = $this->getBcPrecision($operand, $precision) + 1;
154
155	4	return (string) round(bcsqrt($operand, $bcPrecision), $precision, $this->roundingStrategy);
156		}
157
158		/**
159		* Returns absolute value of operand.
160		*
161		* @param string $operand
162		*
163		* @return string
164		*/
165	4	public function absolute(string $operand): string
166		{
167	4	throw $this->createInvalidLibraryException(__FUNCTION__);
168		}
169
170		/**
171		* Negates a number. Opposite of absolute/abs.
172		*
173		* @param string $operand
174		*
175		* @return string
176		*/
177	4	public function negate(string $operand): string
178		{
179	4	throw $this->createInvalidLibraryException(__FUNCTION__);
180		}
181
182		/**
183		* Returns the factorial of operand.
184		*
185		* @param string $operand
186		*
187		* @return string
188		*/
189	4	public function factorial(string $operand): string
190		{
191	4	throw $this->createInvalidLibraryException(__FUNCTION__);
192		}
193
194		/**
195		* Greatest common divisor.
196		*
197		* @param string $leftOperand
198		* @param string $rightOperand
199		*
200		* @return string
201		*/
202	4	public function gcd(string $leftOperand, string $rightOperand): string
203		{
204	4	throw $this->createInvalidLibraryException(__FUNCTION__);
205		}
206
207		/**
208		* Calculates to the nth root.
209		*
210		* @param string $operand
211		* @param int $nth
212		*
213		* @return string
214		*/
215	4	public function root(string $operand, int $nth): string
216		{
217	4	throw $this->createInvalidLibraryException(__FUNCTION__);
218		}
219
220		/**
221		* Gets the next prime after operand.
222		*
223		* @param string $operand
224		*
225		* @return string
226		*/
227	4	public function nextPrime(string $operand): string
228		{
229	4	throw $this->createInvalidLibraryException(__FUNCTION__);
230		}
231
232		/**
233		* @param string $operand
234		* @param int $reps
235		*
236		* @return bool
237		*/
238	4	public function isPrime(string $operand, int $reps = 10): bool
239		{
240	4	throw $this->createInvalidLibraryException(__FUNCTION__);
241		}
242
243		/**
244		* Checks if operand is perfect square.
245		*
246		* @param string $operand
247		* @param int $precision
248		*
249		* @return bool
250		*/
251	4	public function isPerfectSquare(string $operand, int $precision = 0): bool
252		{
253	4	throw $this->createInvalidLibraryException(__FUNCTION__);
254		}
255
256		/**
257		* The gamma function.
258		*
259		* @param string $operand
260		*
261		* @return string
262		*/
263	1	public function gamma(string $operand): string
264		{
265	1	throw $this->createInvalidLibraryException(__FUNCTION__);
266		}
267
268		/**
269		* The log-gamma function.
270		*
271		* @param string $operand
272		*
273		* @return string
274		*/
275	1	public function logGamma(string $operand): string
276		{
277	1	throw $this->createInvalidLibraryException(__FUNCTION__);
278		}
279
280		/**
281		* @param string $type
282		*
283		* @return bool
284		*/
285	48	public function supportsOperationType(string $type): bool
286		{
287		//Supports both float and int.
288	48	return true;
289		}
290
291		/**
292		* @return bool
293		*/
294	48	public function isEnabled(): bool
295		{
296	48	return extension_loaded('bcmath');
297		}
298
299		/**
300		* Returns BCMath Precision.
301		*
302		* It differs from standard PHP precision in that it includes the numbers before the decimal period.
303		* It always uses the left most operand to calculate precision.
304		*
305		* @param string $leftOperand
306		* @param int $precision
307		*
308		* @return int
309		*/
310	28	private function getBcPrecision(string $leftOperand, int $precision = 0): int
311		{
312	28	if ($precision > 0) {
313	21	$operand = StringType::create($leftOperand);
314	21	if ($operand->contains('.')) {
315	21	return $operand->countSubstr('.') + $precision;
316		}
317		}
318
319	24	return $precision;
320		}
321
322		/**
323		* @param string $leftOperand
324		* @param string $rightOperand
325		*
326		* @return bool
327		*/
328	5	private function isVersionComparison(string $leftOperand, string $rightOperand): bool
329		{
330	5	return (StringType::create($leftOperand)->isSemVer()->isTrue()) \|\|
331	5	(StringType::create($rightOperand)->isSemVer()->isTrue());
332		}
333
334		/**
335		* @param string $methodName
336		*
337		* @return \RuntimeException
338		*/
339	34	private function createInvalidLibraryException(string $methodName): \RuntimeException
340		{
341	34	return new \RuntimeException(
342	34	sprintf('Not a valid library for %s.', $methodName)
343		);
344		}
345		}
346

TheDevNetwork / PhpTypes

BcMath::isEnabled() A last analyzed 2017-11-18 07:09 UTC

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BcMath::isEnabled() A
last analyzed 2017-11-18 07:09 UTC