Skip to content

Commit

Permalink
[ARM] 3758/1: Preserve signalling NaNs in conversion
Browse files Browse the repository at this point in the history 
Patch from Daniel Jacobowitz

The fcvtds and fcvtsd instructions were generating a qnan bit pattern
for both quiet and signalling NaNs.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
  • Loading branch information
Daniel Jacobowitz authored and Russell King committed Aug 27, 2006
1 parent c29ecac commit b53a2b4
Show file tree
Hide file tree
Showing 2 changed files with 2 additions and 2 deletions.
2 changes: 1 addition & 1 deletion arch/arm/vfp/vfpdouble.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -465,7 +465,7 @@ static u32 vfp_double_fcvts(int sd, int unused, int dm, u32 fpscr)
*/
if (tm & (VFP_INFINITY|VFP_NAN)) {
vsd.exponent = 255;
if (tm & VFP_NAN)
if (tm == VFP_QNAN)
vsd.significand |= VFP_SINGLE_SIGNIFICAND_QNAN;
goto pack_nan;
} else if (tm & VFP_ZERO)
Expand Down
2 changes: 1 addition & 1 deletion arch/arm/vfp/vfpsingle.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -506,7 +506,7 @@ static u32 vfp_single_fcvtd(int dd, int unused, s32 m, u32 fpscr)
*/
if (tm & (VFP_INFINITY|VFP_NAN)) {
vdd.exponent = 2047;
if (tm & VFP_NAN)
if (tm == VFP_QNAN)
vdd.significand |= VFP_DOUBLE_SIGNIFICAND_QNAN;
goto pack_nan;
} else if (tm & VFP_ZERO)
Expand Down

0 comments on commit b53a2b4

Please sign in to comment.