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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-09-01 13:56:46 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-09-01 13:56:46 +0200
commit22f703cab05b7cd368f4de9e03991b7664dc5022 (patch)
tree6f4d50beaa42328e24b1c6b56b6ec059e4ef21a5 /numlib/zbrent.h
Initial import of argyll version 1.5.1-8debian/1.5.1-8
Diffstat (limited to 'numlib/zbrent.h')
-rw-r--r--numlib/zbrent.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/numlib/zbrent.h b/numlib/zbrent.h
new file mode 100644
index 0000000..2f8aac4
--- /dev/null
+++ b/numlib/zbrent.h
@@ -0,0 +1,44 @@
+#ifndef ROOT_H
+#define ROOT_H
+
+/*
+ * Copyright 2000 Graeme W. Gill
+ * All rights reserved.
+ *
+ * This material is licenced under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 :-
+ * see the License.txt file for licencing details.
+ */
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* 1 dimentional root finding code */
+
+/* Bracket search function */
+/* return 0 on sucess */
+/* -1 on no range */
+/* -2 on too many itterations */
+int zbrac(
+double *x1, /* Input and output bracket values */
+double *x2,
+double (*func)(void *fdata, double tp), /* function to evaluate */
+void *fdata); /* Opaque data pointer */
+
+/* Root finder */
+/* return 0 on sucess */
+/* -1 on root not bracketed */
+/* -2 on too many itterations */
+int zbrent(
+double *rv, /* Return value */
+double x1, /* Bracket to search */
+double x2, /* (Min, Max) */
+double tol, /* Desired tollerance */
+double (*func)(void *fdata, double tp), /* function to evaluate */
+void *fdata); /* Opaque data pointer */
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* ROOT_H */