Use 4294967296.f instead of 0x1p32f to fix MSVC

[compnerd]

I think that this really hurts readability. It is unfortunate that MSVC doesn't support this even as of VS2015. Can you please at least leave the current values as comments? Something like:

su_int high = a / 4294967296.f;         /* a / 0x1p32f; */

[angelsl]

Corrections made.

[compnerd]

SVN r249374.

lib/builtins/fixunsdfdi.c

 __fixunsdfdi(double a)
 {
     if (a <= 0.0) return 0;
-    su_int high = a/0x1p32f;
-    su_int low = a - (double)high*0x1p32f;
+    su_int high = a/4294967296.f; /* a/0x1p32f; */
+    su_int low = a - (double)high*4294967296.f; /* high*0x1p32f; */
     return ((du_int)high << 32) | low;
 }
 

lib/builtins/fixunssfdi.c

 {
     if (a <= 0.0f) return 0;
     double da = a;
-    su_int high = da/0x1p32f;
-    su_int low = da - (double)high*0x1p32f;
+    su_int high = da/4294967296.f; /* da/0x1p32f; */
+    su_int low = da - (double)high*4294967296.f; /* high*0x1p32f; */
     return ((du_int)high << 32) | low;
 }