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author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2018-07-11 22:19:56 +0200 |
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committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2018-07-11 22:19:56 +0200 |
commit | a0442ed58dee48a521ea053083ea967894507898 (patch) | |
tree | 241f3920c6a80d0bad494d3969ea98aabfef4b7d /numlib/roots.h | |
parent | f6b8e0eae4374f339487a33e3e4fe5462d5816e1 (diff) |
New upstream version 2.0.1+repackupstream/2.0.1+repackupstream
Diffstat (limited to 'numlib/roots.h')
-rwxr-xr-x | numlib/roots.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/numlib/roots.h b/numlib/roots.h new file mode 100755 index 0000000..e14b72d --- /dev/null +++ b/numlib/roots.h @@ -0,0 +1,23 @@ + +/* + * 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]); + + |