Image, feature and unit cell infrastructure

Brought across from DTR and Synth3D

1 files changed, 42 insertions, 0 deletions

diff --git a/src/utils.h b/src/utils.h
new file mode 100644
index 00000000..ef37bc73
--- /dev/null
+++ b/src/utils.h
@@ -0,0 +1,42 @@
+/*
+ * utils.h
+ *
+ * Utility stuff
+ *
+ * (c) 2006-2009 Thomas White <thomas.white@desy.de>
+ *
+ * template_index - Indexing diffraction patterns by template matching
+ *
+ */
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <math.h>
+
+extern unsigned int biggest(signed int a, signed int b);
+extern unsigned int smallest(signed int a, signed int b);
+extern double distance(double x1, double y1, double x2, double y2);
+extern double modulus(double x, double y, double z);
+extern double modulus_squared(double x, double y, double z);
+extern double angle_between(double x1, double y1, double z1,
+                            double x2, double y2, double z2);
+extern double angle_between_d(double x1, double y1, double z1,
+                              double x2, double y2, double z2);
+extern double lambda(double voltage);
+extern double distance3d(double x1, double y1, double z1,
+                         double x2, double y2, double z2);
+extern size_t skipspace(const char *s);
+extern void chomp(char *s);
+extern int sign(double a);
+
+#define rad2deg(a) ((a)*180/M_PI)
+#define deg2rad(a) ((a)*M_PI/180)
+
+#define is_odd(a) ((a)%2==1)
+
+#endif	/* UTILS_H */