more code formatting consistency changes for loops and conditionals

src/compute_orientorder_atom.cpp

@@ -347,17 +347,17 @@ double ComputeOrientOrderAtom::memory_usage()
 
 #define SWAP(a,b) do {       \
     tmp = a; a = b; b = tmp; \
-  } while(0)
+  } while (0)
 
 #define ISWAP(a,b) do {        \
     itmp = a; a = b; b = itmp; \
-  } while(0)
+  } while (0)
 
 #define SWAP3(a,b) do {                  \
     tmp = a[0]; a[0] = b[0]; b[0] = tmp; \
     tmp = a[1]; a[1] = b[1]; b[1] = tmp; \
     tmp = a[2]; a[2] = b[2]; b[2] = tmp; \
-  } while(0)
+  } while (0)
 
 /* ---------------------------------------------------------------------- */