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Last change
on this file since 410 was 2, checked in by bird, 23 years ago |
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Initial revision
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-
Property cvs2svn:cvs-rev
set to
1.1
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Property svn:eol-style
set to
native
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Property svn:executable
set to
*
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File size:
317 bytes
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| 1 | #include "f2c.h"
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| 2 |
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| 3 | #ifdef KR_headers
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| 4 | extern double log(), f__cabs(), atan2();
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| 5 | VOID c_log(r, z) complex *r, *z;
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| 6 | #else
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| 7 | #undef abs
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| 8 | #include "math.h"
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| 9 | extern double f__cabs(double, double);
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| 10 |
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| 11 | void c_log(complex *r, complex *z)
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| 12 | #endif
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| 13 | {
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| 14 | double zi, zr;
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| 15 | r->i = atan2(zi = z->i, zr = z->r);
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| 16 | r->r = log( f__cabs(zr, zi) );
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| 17 | }
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