gmp_div_q
(PHP 4 >= 4.0.4, PHP 5)
gmp_div_q — Divide numbers
说明
resource gmp_div_q ( resource $a , resource $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 以上例程会输出：
<?php
$div1 = gmp_div_q("100", "5");
echo gmp_strval($div1) . "
";
$div2 = gmp_div_q("1", "3");
echo gmp_strval($div2) . "
";
$div3 = gmp_div_q("1", "3", GMP_ROUND_PLUSINF);
echo gmp_strval($div3) . "
";
$div4 = gmp_div_q("-1", "4", GMP_ROUND_PLUSINF);
echo gmp_strval($div4) . "
";
$div5 = gmp_div_q("-1", "4", GMP_ROUND_MINUSINF);
echo gmp_strval($div5) . "
";
?>
20
0
1
0
-1
注释
Note:
This function can also be called as gmp_div().
参见
- gmp_div_r() - Remainder of the division of numbers
- gmp_div_qr() - Divide numbers and get quotient and remainder
