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authorJörg Frings-Fürst <debian@jff-webhosting.net>2018-07-11 22:19:56 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2018-07-11 22:19:56 +0200
commita0442ed58dee48a521ea053083ea967894507898 (patch)
tree241f3920c6a80d0bad494d3969ea98aabfef4b7d /numlib/roots.h
parentf6b8e0eae4374f339487a33e3e4fe5462d5816e1 (diff)
New upstream version 2.0.1+repackupstream/2.0.1+repackupstream
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diff --git a/numlib/roots.h b/numlib/roots.h
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+
+/*
+ * Roots3And4.c
+ *
+ * Utility functions to find cubic and quartic roots,
+ * coefficients are passed like this:
+ *
+ * c[0] + c[1]*x + c[2]*x^2 + c[3]*x^3 + c[4]*x^4 = 0
+ *
+ * The functions return the number of non-complex roots and
+ * put the values into the s array.
+ *
+ * Author: Jochen Schwarze (schwarze@isa.de)
+ * (From Graphics Gems I)
+ */
+
+int SolveQuadric(double c[3], double s[2]);
+
+int SolveCubic(double c[4], double s[3]);
+
+int SolveQuartic(double c[5], double s[4]);
+
+