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2004-02-13 Frank Ch. Eigler <fche@redhat.com>
[pf3gnuchains/gcc-fork.git]
/
libf2c
/
libF77
/
c_log.c
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#include "f2c.h"
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#undef abs
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#include "math.h"
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extern double f__cabs (double, double);
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void
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c_log (complex * r, complex * z)
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{
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double zi, zr;
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r->i = atan2 (zi = z->i, zr = z->r);
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r->r = log (f__cabs (zr, zi));
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}