amath  1.8.5
Simple command line calculator
asec.c
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1 /*-
2  * Copyright (c) 2014-2018 Carsten Sonne Larsen <cs@innolan.net>
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29 
30 /**
31  * @file asec.c
32  * @brief Inverse secant function
33  */
34 
35 #include "prim.h"
36 
37 /**
38  * @brief Inverse secant function
39  * @details
40  * <pre>
41  * Method
42  * arcsec(x) = arccos(1/x)
43  * </pre>
44  */
45 double asec(double x)
46 {
47  double a = 1.0 / x;
48  double b = acos(a);
49  return b;
50 }
double asec(double x)
Inverse secant function.
Definition: asec.c:45
double acos(double x)
Inverse cosine function.
Definition: acos.c:92