diff --git a/compiler-rt/lib/builtins/fixunsdfdi.c b/compiler-rt/lib/builtins/fixunsdfdi.c
index 2e0d87eacf05..4b0bc9e1d051 100644
--- a/compiler-rt/lib/builtins/fixunsdfdi.c
+++ b/compiler-rt/lib/builtins/fixunsdfdi.c
@@ -22,8 +22,8 @@ COMPILER_RT_ABI du_int
 __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;
 }
 
diff --git a/compiler-rt/lib/builtins/fixunssfdi.c b/compiler-rt/lib/builtins/fixunssfdi.c
index 5a154e82cff4..f8ebab854f95 100644
--- a/compiler-rt/lib/builtins/fixunssfdi.c
+++ b/compiler-rt/lib/builtins/fixunssfdi.c
@@ -23,8 +23,8 @@ __fixunssfdi(float a)
 {
     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;
 }