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/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* zeroes.c - compute roots for various equations. |
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* |
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* 8/19/85 |
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* External symbols declared in standard.h |
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*/ |
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#define FTINY 1e-7 |
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#include "copyright.h" |
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#include <math.h> |
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#include "fvect.h" |
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#include "rtmath.h" |
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int |
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quadratic(r, a, b, c) /* find real roots of quadratic equation */ |
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double *r; /* roots in ascending order */ |
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double a, b, c; |
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{ |
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double fabs(), sqrt(); |
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double disc; |
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int first; |
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