Commit | Line | Data |
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e88efc3a | 1 | /* |
1c3db5b1 RE |
2 | * Copyright (c) 1980 Regents of the University of California. |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
6 | * @(#)c_log.c 5.1 %G% | |
e88efc3a DW |
7 | */ |
8 | ||
9 | #include "complex" | |
10 | ||
11 | c_log(r, z) | |
12 | complex *r, *z; | |
13 | { | |
14 | double log(), cabs(), atan2(); | |
15 | ||
16 | r->imag = atan2(z->imag, z->real); | |
17 | r->real = log( cabs(z->real, z->imag) ); | |
18 | } |