SunshinePHP Developer Conference 2015

gmp_div_q

(PHP 4 >= 4.0.4, PHP 5)

gmp_div_qDivide numbers

说明

GMP gmp_div_q ( GMP $a , GMP $b [, int $round = GMP_ROUND_ZERO ] )

Divides a by b and returns the integer result.

参数

a

The number being divided.

可以是一个 GMP 数据 resouce,或一个可以转换为数值的字符串。

b

The number that a is being divided by.

可以是一个 GMP 数据 resouce,或一个可以转换为数值的字符串。

round

The result rounding is defined by the round, which can have the following values:

  • GMP_ROUND_ZERO: The result is truncated towards 0.
  • GMP_ROUND_PLUSINF: The result is rounded towards +infinity.
  • GMP_ROUND_MINUSINF: The result is rounded towards -infinity.

可以是一个 GMP 数据 resouce,或一个可以转换为数值的字符串。

返回值

GMP 数值资源.

范例

Example #1 gmp_div_q() example

<?php
$div1 
gmp_div_q("100""5");
echo 
gmp_strval($div1) . "\n";

$div2 gmp_div_q("1""3");
echo 
gmp_strval($div2) . "\n";

$div3 gmp_div_q("1""3"GMP_ROUND_PLUSINF);
echo 
gmp_strval($div3) . "\n";

$div4 gmp_div_q("-1""4"GMP_ROUND_PLUSINF);
echo 
gmp_strval($div4) . "\n";

$div5 gmp_div_q("-1""4"GMP_ROUND_MINUSINF);
echo 
gmp_strval($div5) . "\n";
?>

以上例程会输出:

20
0
1
0
-1

注释

Note:

This function can also be called as gmp_div().

参见

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