conversion: macrofied conversion

silly.c

@@ -97,22 +97,20 @@ silly make_silly(short sign, int before, int after) {
   return s;
 }
 
+#define FROM(n) {\
+  silly s;\
+  double _;\
+  s.sign = signbit(x);\
+  x = fabs(x);\
+  s.before = trunc(x);\
+  s.after = modf(x, &_);\
+  return s;\
+}
+
 silly silly_from_float(float x) {
-  silly s;
+  FROM(x);
-  double _;
-  s.sign = signbit(x);
-  x = fabs(x);
-  s.before = trunc(x);
-  s.after = modf(x, &_);
-  return s;
 }
 
 silly silly_from_double(double x) {
-  silly s;
+  FROM(x);
-  double _;
-  s.sign = signbit(x);
-  x = fabs(x);
-  s.before = trunc(x);
-  s.after = modf(x, &_);
-  return s;
 }