Changeset ba5870d in mainline

Timestamp:

2006-02-24T17:55:08Z (19 years ago)

Author:

Josef Cejka <malyzelenyhnus@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f37d769

Parents:

1d83419

Message:

Long long → float conversion finished.

Location:

softfloat

Files:

• generic/conversion.c (modified) (1 diff)
• include/common.h (modified) (1 diff)

softfloat/generic/conversion.c

@@ -442 +442 @@
 float32 uint64_to_float32(__u64 i) 
 {
+        int counter;
+        __s32 exp;
+        float32 result;
+        
+        result.parts.sign = 0;
+        result.parts.fraction = 0;
+
+        counter = countZeroes64(i);
+
+        exp = FLOAT32_BIAS + 64 - counter - 1;
+        
+        if (counter == 64) {
+                result.binary = 0;
+                return result;
+        }
+        
+        /* Shift all to the first 31 bits (31. will be hidden 1)*/
+        if (counter > 33) {
+                i <<= counter - 1 - 32;
+        } else {
+                i >>= 1 + 32 - counter;
+        }
+
+        roundFloat32(&exp, &i);
+
+        result.parts.fraction = i >> 7;
+        result.parts.exp = exp;
+        return result;
 }
 

softfloat/include/common.h

@@ -34 +34 @@
 float64 finishFloat64(__s32 cexp, __u64 cfrac, char sign);
 
+int countZeroes64(__u64 i);
 int countZeroes32(__u32 i);
 int countZeroes8(__u8 i);