trader_acos
(PECL trader >= 0.2.0)
trader_acos — Vector Trigonometric ACos
说明
trader_acos(array
$real): array
Calculates the arc cosine for each value in
real and returns the resulting array.
参数
-
real -
浮点数数组。
返回值
Returns an array with calculated data or false on failure.
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User Contributed Notes 1 note
geekgirl dot joy at gmail dot com ¶
1 year ago
$real = array(1, 0.5, 1, 0.5, 0.2, 0.3, 0.5, 0.8, 0.9, 0.5);
$result = trader_acos($real);
var_dump($result);
/*
array(10) {
[0]=>
float(0)
[1]=>
float(1.047)
[2]=>
float(0)
[3]=>
float(1.047)
[4]=>
float(1.369)
[5]=>
float(1.266)
[6]=>
float(1.047)
[7]=>
float(0.644)
[8]=>
float(0.451)
[9]=>
float(1.047)
}
*/