Merge "Merge branch release-4-6 into master"

[alexxy/gromacs.git] / src / gromacs / legacyheaders / maths.h

diff --git a/src/gromacs/legacyheaders/maths.h b/src/gromacs/legacyheaders/maths.h
index 567119624b489ece0f85d1a970f5ec65d3f617fa..efbfdaebbe97f9862e8a0b1f158ae9c92846cd6a 100644 (file)
--- a/src/gromacs/legacyheaders/maths.h
+++ b/src/gromacs/legacyheaders/maths.h
@@ -170,6 +170,18 @@ check_int_multiply_for_overflow(gmx_large_int_t  a,
                                 gmx_large_int_t  b,
                                 gmx_large_int_t *result);
 
+static int gmx_greatest_common_divisor(int p, int q)
+{
+    int tmp;
+    while (q != 0)
+    {
+        tmp = q;
+        q = p % q;
+        p = tmp;
+    }
+    return p;
+}
+
 #ifdef __cplusplus
 }
 #endif