softfloat: Convert integer to floatx80 to FloatParts

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 9caf1ec..be75837 100644 (file)
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -3345,6 +3345,19 @@ float128 int32_to_float128(int32_t a, float_status *status)
     return int64_to_float128(a, status);
 }
 
+floatx80 int64_to_floatx80(int64_t a, float_status *status)
+{
+    FloatParts128 p;
+
+    parts_sint_to_float(&p, a, 0, status);
+    return floatx80_round_pack_canonical(&p, status);
+}
+
+floatx80 int32_to_floatx80(int32_t a, float_status *status)
+{
+    return int64_to_floatx80(a, status);
+}
+
 /*
  * Unsigned Integer to floating-point conversions
  */
@@ -5033,51 +5046,6 @@ static float128 normalizeRoundAndPackFloat128(bool zSign, int32_t zExp,
 
 }
 
-
-/*----------------------------------------------------------------------------
-| Returns the result of converting the 32-bit two's complement integer `a'
-| to the extended double-precision floating-point format.  The conversion
-| is performed according to the IEC/IEEE Standard for Binary Floating-Point
-| Arithmetic.
-*----------------------------------------------------------------------------*/
-
-floatx80 int32_to_floatx80(int32_t a, float_status *status)
-{
-    bool zSign;
-    uint32_t absA;
-    int8_t shiftCount;
-    uint64_t zSig;
-
-    if ( a == 0 ) return packFloatx80( 0, 0, 0 );
-    zSign = ( a < 0 );
-    absA = zSign ? - a : a;
-    shiftCount = clz32(absA) + 32;
-    zSig = absA;
-    return packFloatx80( zSign, 0x403E - shiftCount, zSig<<shiftCount );
-
-}
-
-/*----------------------------------------------------------------------------
-| Returns the result of converting the 64-bit two's complement integer `a'
-| to the extended double-precision floating-point format.  The conversion
-| is performed according to the IEC/IEEE Standard for Binary Floating-Point
-| Arithmetic.
-*----------------------------------------------------------------------------*/
-
-floatx80 int64_to_floatx80(int64_t a, float_status *status)
-{
-    bool zSign;
-    uint64_t absA;
-    int8_t shiftCount;
-
-    if ( a == 0 ) return packFloatx80( 0, 0, 0 );
-    zSign = ( a < 0 );
-    absA = zSign ? - a : a;
-    shiftCount = clz64(absA);
-    return packFloatx80( zSign, 0x403E - shiftCount, absA<<shiftCount );
-
-}
-
 /*----------------------------------------------------------------------------
 | Returns the result of converting the single-precision floating-point value
 | `a' to the extended double-precision floating-point format.  The conversion