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-rw-r--r--src/gd_intern.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/gd_intern.h b/src/gd_intern.h
new file mode 100644
index 0000000..27f3d10
--- /dev/null
+++ b/src/gd_intern.h
@@ -0,0 +1,13 @@
+#ifndef GD_INTERN_H
+#define GD_INTERN_H
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+#define MIN3(a,b,c) ((a)<(b)?(MIN(a,c)):(MIN(b,c)))
+#ifndef MAX
+#define MAX(a,b) ((a)<(b)?(b):(a))
+#endif
+#define MAX3(a,b,c) ((a)<(b)?(MAX(b,c)):(MAX(a,c)))
+
+#endif
+