FMAT::fact() - Code Metrics - Inspection of "[+]邮件库的bug修复：一个正则错误以及旧函数的更新" - icy2003/php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — dev (ec2832)

by t

created 2019-10-22 02:25 UTC

FMAT::fact() A

↳ Parent: FMAT

Complexity

Conditions	4
Paths	4

Size

Total Lines	13
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	10
CRAP Score	4

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	4
eloc	9
c	1
b	0
f	0
nc	4
nop	1
dl	0
loc	13
ccs	10
cts	10
cp	1
crap	4
rs	9.9666

<?php
/**
 * Trait MathAndTrigonometry-F
 *
 * @link https://www.icy2003.com/
 * @author icy2003 <[email protected]>
 * @copyright Copyright (c) 2017, icy2003
 */
namespace icy2003\php\icomponents\excel\mathAndTrigonometry;

use icy2003\php\ihelpers\Arrays;

/**
 * MathAndTrigonometry-F
 */
trait FMAT
{
    /**
     * 返回数的阶乘
     *
     * @param integer|double $number 必需。 要计算其阶乘的非负数。 如果 number 不是整数，将被截尾取整
     *
     * @return integer|false
     */
    public static function fact($number)
    {
        $number = (int) floor($number);
        if ($number == 0) {
            return 1;
        } elseif ($number < 0) {
            return false;
        }
        $result = 1;
        foreach (Arrays::rangeGenerator(1, $number) as $num) {
            $result *= $num;
        }
        return $result;
    }

    /**
     * 返回数字的双倍阶乘
     *
     * - 偶数：n!! = n * (n - 2) * (n - 4) * ... * 4 * 2
     * - 奇数：n!! = n * (n - 2) * (n - 4) * ... * 3 * 1
     *
     * @param integer $number 必需。 为其返回双倍阶乘的值。 如果 number 不是整数，将被截尾取整
     *
     * @return integer
     */
    public static function factdouble($number)
    {
        if ($number == 0) {
            return 1;
        }
        $result = 1;
        $isEven = $number % 2 == 0;
        foreach (Arrays::rangeGenerator($isEven ? 2 : 1, (int) $number, 2) as $num) {
            $result *= $num;
        }
        return $result;
    }

    /**
     * 将参数 number 向下舍入（沿绝对值减小的方向）为最接近的 significance 的倍数
     *
     * @param double $number 必需。 要舍入的数值
     * @param double $significance 必需。 要舍入到的倍数
     *
     * @return double|false
     */
    public static function floor($number, $significance = 1)
    {
        return (is_numeric($number) && is_numeric($significance)) && ($number * $significance > 0) ? (floor($number / $significance) * $significance) : false;

    }
}


1		<?php
2		/**
3		* Trait MathAndTrigonometry-F
4		*
5		* @link https://www.icy2003.com/
6		* @author icy2003 <[email protected]>
7		* @copyright Copyright (c) 2017, icy2003
8		*/
9		namespace icy2003\php\icomponents\excel\mathAndTrigonometry;
10
11		use icy2003\php\ihelpers\Arrays;
12
13		/**
14		* MathAndTrigonometry-F
15		*/
16		trait FMAT
17		{
18		/**
19		* 返回数的阶乘
20		*
21		* @param integer\|double $number 必需。要计算其阶乘的非负数。如果 number 不是整数，将被截尾取整
22		*
23		* @return integer\|false
24		*/
25	4	public static function fact($number)
26		{
27	4	$number = (int) floor($number);
28	4	if ($number == 0) {
29	1	return 1;
30	4	} elseif ($number < 0) {
31	1	return false;
32		}
33	4	$result = 1;
34	4	foreach (Arrays::rangeGenerator(1, $number) as $num) {
35	4	$result *= $num;
36		}
37	4	return $result;
38		}
39
40		/**
41		* 返回数字的双倍阶乘
42		*
43		* - 偶数：n!! = n * (n - 2) * (n - 4) * ... * 4 * 2
44		* - 奇数：n!! = n * (n - 2) * (n - 4) * ... * 3 * 1
45		*
46		* @param integer $number 必需。为其返回双倍阶乘的值。如果 number 不是整数，将被截尾取整
47		*
48		* @return integer
49		*/
50	1	public static function factdouble($number)
51		{
52	1	if ($number == 0) {
53	1	return 1;
54		}
55	1	$result = 1;
56	1	$isEven = $number % 2 == 0;
57	1	foreach (Arrays::rangeGenerator($isEven ? 2 : 1, (int) $number, 2) as $num) {
58	1	$result *= $num;
59		}
60	1	return $result;
61		}
62
63		/**
64		* 将参数 number 向下舍入（沿绝对值减小的方向）为最接近的 significance 的倍数
65		*
66		* @param double $number 必需。要舍入的数值
67		* @param double $significance 必需。要舍入到的倍数
68		*
69		* @return double\|false
70		*/
71	1	public static function floor($number, $significance = 1)
72		{
73	1	return (is_numeric($number) && is_numeric($significance)) && ($number * $significance > 0) ? (floor($number / $significance) * $significance) : false;
		0 ignored issues – show introduced 2019-10-22 02:28 UTC by Report Bug Copy Issue Report The condition `is_numeric($significance)` is always `true`. Loading history...
74		}
75		}
76

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Branch — dev (ec2832)

FMAT::fact() A

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