Perl | atan2()函数

原文:https://www.geeksforgeeks.org/perl-atan2-function/

该函数用于计算 Y/X 在-π到π范围内的反正切。

语法: atan2(Y，X)

参数: YX为轴值

返回:函数返回-PI 到 PI 范围内 Y/X 的反正切。

示例 1:

#!/usr/bin/perl

# Assigning values to X and y
$Y = 45;
$X = 70;

# Calling atan2() function
$return_val = atan2($Y, $X);

# printing the value
print "atan2 of 45/70 is : $return_val\n";

输出:

atan2 of 45/70 is : 0.571337479833627

示例 2:

#!/usr/bin/perl

# Assigning values to X and y
$Y = -30;
$X = 40;

# Calling atan2() function
$return_val = atan2($Y, $X);

# printing the value
print "atan2 of -30/40 is : $return_val\n";

输出:

atan2 of -30/40 is : -0.643501108793284

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