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Commit d19cf86e authored by Maciej W. Rozycki's avatar Maciej W. Rozycki Committed by Ralf Baechle
Browse files

MIPS: math-emu: Factor out NaN FP format conversions 



Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9686/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent ec98f9a0

arch/mips/math-emu/dp_fsp.c

+8 −5
Original line number Diff line number Diff line
@@ -22,6 +22,12 @@ 
#include "ieee754sp.h"

#include "ieee754dp.h"



static inline union ieee754dp ieee754dp_nan_fsp(int xs, u64 xm)

{

	return builddp(xs, DP_EMAX + 1 + DP_EBIAS,

		       xm << (DP_FBITS - SP_FBITS));

}



union ieee754dp ieee754dp_fsp(union ieee754sp x)

{

	COMPXSP;
@@ -38,11 +44,8 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x) 
		return ieee754dp_nanxcpt(ieee754dp_indef());



	case IEEE754_CLASS_QNAN:

		return ieee754dp_nanxcpt(builddp(xs,

						 DP_EMAX + 1 + DP_EBIAS,

						 ((u64) xm

						  << (DP_FBITS -

						      SP_FBITS))));

		return ieee754dp_nanxcpt(ieee754dp_nan_fsp(xs, xm));



	case IEEE754_CLASS_INF:

		return ieee754dp_inf(xs);

arch/mips/math-emu/sp_fdp.c

+7 −2
Original line number Diff line number Diff line
@@ -22,6 +22,12 @@ 
#include "ieee754sp.h"

#include "ieee754dp.h"



static inline union ieee754sp ieee754sp_nan_fdp(int xs, u64 xm)

{

	return buildsp(xs, SP_EMAX + 1 + SP_EBIAS,

		       xm >> (DP_FBITS - SP_FBITS));

}



union ieee754sp ieee754sp_fdp(union ieee754dp x)

{

	u32 rm;
@@ -41,8 +47,7 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x) 
		return ieee754sp_nanxcpt(ieee754sp_indef());



	case IEEE754_CLASS_QNAN:

		nan = buildsp(xs, SP_EMAX + 1 + SP_EBIAS, (u32)

				(xm >> (DP_FBITS - SP_FBITS)));

		nan = ieee754sp_nan_fdp(xs, xm);

		if (!ieee754sp_isnan(nan))

			nan = ieee754sp_indef();

		return ieee754sp_nanxcpt(nan);