The interface to normalizeRoundAndPackFloat64 requires that the
high bit be clear. Perform one shift-right-and-jam if needed.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
fpu/softfloat.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 8413146..62830d7 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -1273,9 +1273,14 @@ float64 int64_to_float64( int64 a STATUS_PARAM )
float64 uint64_to_float64( uint64 a STATUS_PARAM )
{
- if ( a == 0 ) return float64_zero;
- return normalizeRoundAndPackFloat64( 0, 0x43C, a STATUS_VAR );
+ int exp = 0x43C;
+ if ( a == 0 ) return float64_zero;
+ if ( (int64_t)a < 0 ) {
+ shift64RightJamming(a, 1, &a);
+ exp += 1;
+ }
+ return normalizeRoundAndPackFloat64( 0, exp, a STATUS_VAR );
}
/*----------------------------------------------------------------------------
--
1.7.11.7
