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547779a8 WH |
1 | #include "f2c.h" |
2 | ||
3 | #ifdef KR_headers | |
4 | extern double log(), f__cabs(), atan2(); | |
5 | VOID c_log(r, z) complex *r, *z; | |
6 | #else | |
7 | #undef abs | |
8 | #include "math.h" | |
9 | extern double f__cabs(double, double); | |
10 | ||
11 | void c_log(complex *r, complex *z) | |
12 | #endif | |
13 | { | |
14 | r->i = atan2(z->i, z->r); | |
15 | r->r = log( f__cabs(z->r, z->i) ); | |
16 | } |