Trying to make the source code more understandable by removing mixing of...

Trying to make the source code more understandable by removing mixing of ternary if statements with attributions.

src/numeric.c

@@ -380,7 +380,11 @@ flo_shift(mrb_state *mrb, mrb_value x, mrb_int width)
 #if defined(_ISOC99_SOURCE)
     val = trunc(val);
 #else
-    val = val > 0 ? floor(val) : ceil(val);
+    if (val > 0){
+        val = floor(val);    
+    } else {
+        val = ceil(val);
+    }
 #endif
     if (val == 0 && mrb_float(x) < 0) {
       return mrb_fixnum_value(-1);