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<?php |
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/** |
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* Trait MathAndTrigonometry-R |
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* |
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* @link https://www.icy2003.com/ |
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* @author icy2003 <[email protected]> |
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* @copyright Copyright (c) 2017, icy2003 |
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*/ |
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namespace icy2003\php\icomponents\excel\mathAndTrigonometry; |
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/** |
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* MathAndTrigonometry-R |
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*/ |
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trait RMAT |
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{ |
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/** |
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* 将度数转换为弧度 |
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* |
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* @param double $angle 必需。 要转换的以度数表示的角度 |
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* |
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* @return double |
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*/ |
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public static function radians($angle) |
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{ |
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return deg2rad($angle); |
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} |
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/** |
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* 返回了一个大于等于 0 且小于 1 的平均分布的随机实数 |
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* |
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* @return double |
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*/ |
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public static function rand() |
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{ |
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return mt_rand(0, (int) self::power(10, 10)) / self::power(10, 10); |
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} |
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/** |
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* 函数返回一组随机数字。 可指定要填充的行数和列数，最小值和最大值，以及是否返回整数或小数值 |
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* |
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* @param integer $row 要返回的行数 |
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* @param integer $col 要返回的列数 |
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* @param integer $min 想返回的最小数值 |
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* @param integer $max 想返回的最大数值 |
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* @param boolean $isInt 返回整数或小数 |
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* |
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* @return array |
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*/ |
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public static function randarray($row = 1, $col = 1, $min = 0, $max = null, $isInt = false) |
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{ |
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null === $max && $max = (int) pow(10, 10); |
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$array = []; |
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for ($i = 0; $i < $row; $i++) { |
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for ($j = 0; $j < $col; $j++) { |
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$array[$i][$j] = mt_rand($min, $max - 1) + ($isInt ? 0 : mt_rand(0, (int) pow(10, 10)) / pow(10, 10)); |
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} |
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} |
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return $array; |
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} |
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/** |
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* 返回位于两个指定数之间的一个随机整数 |
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* |
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* @param integer $bottom 必需。 RANDBETWEEN 将返回的最小整数 |
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* @param integer $top 必需。 RANDBETWEEN 将返回的最大整数 |
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* |
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* @return integer |
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*/ |
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public static function randbetween($bottom, $top) |
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{ |
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return mt_rand($bottom, $top); |
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} |
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/** |
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* 将阿拉伯数字转换为文字形式的罗马数字 |
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* |
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* - 注意：不支持简明版 |
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* |
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* @param integer $number |
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* |
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* @return string|false |
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*/ |
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public static function roman($number) |
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{ |
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if (!is_numeric($number) || $number > 3999 || $number <= 0) { |
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return false; |
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} |
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$roman = array( |
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'M' => 1000, |
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'D' => 500, |
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'C' => 100, |
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'L' => 50, |
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'X' => 10, |
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'V' => 5, |
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'I' => 1, |
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); |
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$amount = []; |
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foreach ($roman as $k => $v) { |
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if (($amount[$k] = floor($number / $v)) > 0) { |
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$number -= $amount[$k] * $v; |
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} |
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} |
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// Build the string: |
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$return = ''; |
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$oldK = ''; |
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foreach ($amount as $k => $v) { |
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$return .= $v <= 3 ? str_repeat($k, $v) : $k . $oldK; |
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$oldK = $k; |
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} |
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return str_replace(array('VIV', 'LXL', 'DCD'), array('IX', 'XC', 'CM'), $return); |
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} |
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/** |
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* 函数将数字四舍五入到指定的位数 |
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* |
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* @param double $number 必需。 要四舍五入的数字 |
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* @param integer $digits 要进行四舍五入运算的位数 |
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* |
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* @return double |
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*/ |
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public static function round($number, $digits = 0) |
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{ |
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return round($number, $digits); |
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} |
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/** |
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* 朝着零的方向将数字进行向下舍入 |
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* |
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* @param double $number 必需。需要向下舍入的任意实数 |
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* @param integer $digits 要将数字舍入到的位数 |
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* |
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* @return double |
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*/ |
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public static function rounddown($number, $digits = 0) |
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{ |
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$sign = $number >= 0 ? 1 : -1; |
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return round(abs($number) - 0.5 * pow(10, -$digits), $digits) * $sign; |
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} |
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/** |
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* 朝着远离 0（零）的方向将数字进行向上舍入 |
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* |
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* @param double $number 必需。需要向下舍入的任意实数 |
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* @param integer $digits 要将数字舍入到的位数 |
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* |
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* @return double |
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*/ |
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public static function roundup($number, $digits = 0) |
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{ |
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$sign = $number >= 0 ? 1 : -1; |
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return round(abs($number) + 0.5 * pow(10, -$digits), $digits) * $sign; |
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} |
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} |
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icy2003 /
php
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