test out of range condition using f64

to avoid imprecision due to rounding to f32

src/float/conv.rs

@@ -200,16 +200,16 @@ mod tests {
         fn __fixsfsi(f: extern "C" fn(f32) -> i32,
                     a: F32)
                     -> Option<I32> {
-            if a.0 > (i32::max_value() as f32) ||
-               a.0 < (i32::min_value() as f32) || a.0.is_nan() {
+            if (a.0 as f64) > (i32::max_value() as f64) ||
+                (a.0 as f64) < (i32::min_value() as f64) || a.0.is_nan() {
                    None
            } else { Some(I32(f(a.0))) }
         }
         fn __fixsfdi(f: extern "C" fn(f32) -> i64,
                     a: F32)
                     -> Option<I64> {
-            if a.0 > (i64::max_value() as f32) ||
-               a.0 < (i64::min_value() as f32) || a.0.is_nan() {
+            if (a.0 as f64) > (i64::max_value() as f64) ||
+                (a.0 as f64) < (i64::min_value() as f64) || a.0.is_nan() {
                    None
            } else { Some(I64(f(a.0))) }
         }
@@ -233,16 +233,16 @@ mod tests {
         fn __fixunssfsi(f: extern "C" fn(f32) -> u32,
                     a: F32)
                     -> Option<U32> {
-            if a.0 > (u32::max_value() as f32) ||
-               a.0 < (u32::min_value() as f32) || a.0.is_nan() {
+            if (a.0 as f64) > (u32::max_value() as f64) ||
+                (a.0 as f64) < (u32::min_value() as f64) || a.0.is_nan() {
                    None
            } else { Some(U32(f(a.0))) }
         }
         fn __fixunssfdi(f: extern "C" fn(f32) -> u64,
                     a: F32)
                     -> Option<U64> {
-            if a.0 > (u64::max_value() as f32) ||
-               a.0 < (u64::min_value() as f32) || a.0.is_nan() {
+            if (a.0 as f64) > (u64::max_value() as f64) ||
+                (a.0 as f64) < (u64::min_value() as f64) || a.0.is_nan() {
                    None
            } else { Some(U64(f(a.0))) }
         }