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Commit b53a2b41 authored Aug 27, 2006 by Daniel Jacobowitz Committed by Russell King Aug 27, 2006

[ARM] 3758/1: Preserve signalling NaNs in conversion



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>

parent c29ecac1

arch/arm/vfp/vfpdouble.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)

arch/arm/vfp/vfpsingle.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)