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| author | Maciej W. Rozycki <macro@codesourcery.com> | 2013-05-16 23:33:55 +0100 |
|---|---|---|
| committer | Maciej W. Rozycki <macro@codesourcery.com> | 2013-05-16 23:33:55 +0100 |
| commit | 2848b105856e49d98f3c5026b6d8d790f9723c0c (patch) | |
| tree | 66e6cc9d3c1c6d95324e50ceb1140d0eed52ec37 /ports/sysdeps | |
| parent | c58b274f01658400ba75886b04cb044ba9467a94 (diff) | |
| download | glibc-2848b105856e49d98f3c5026b6d8d790f9723c0c.tar.gz glibc-2848b105856e49d98f3c5026b6d8d790f9723c0c.tar.xz glibc-2848b105856e49d98f3c5026b6d8d790f9723c0c.zip | |
MIPS: soft-fp NaN representation corrections
[BZ #15442] This adds support for the inverse interpretation of the quiet bit of IEEE 754 floating-point NaN data that some processors use. This includes in particular MIPS architecture processors; the payload used for the canonical qNaN encoding is updated accordingly so as not to interfere with the quiet bit.
Diffstat (limited to 'ports/sysdeps')
| -rw-r--r-- | ports/sysdeps/aarch64/soft-fp/sfp-machine.h | 2 | ||||
| -rw-r--r-- | ports/sysdeps/alpha/soft-fp/sfp-machine.h | 1 | ||||
| -rw-r--r-- | ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h | 8 | ||||
| -rw-r--r-- | ports/sysdeps/mips/soft-fp/sfp-machine.h | 8 | ||||
| -rw-r--r-- | ports/sysdeps/powerpc/soft-fp/sfp-machine.h | 1 |
5 files changed, 14 insertions, 6 deletions
diff --git a/ports/sysdeps/aarch64/soft-fp/sfp-machine.h b/ports/sysdeps/aarch64/soft-fp/sfp-machine.h index b355986415..d21d00a934 100644 --- a/ports/sysdeps/aarch64/soft-fp/sfp-machine.h +++ b/ports/sysdeps/aarch64/soft-fp/sfp-machine.h @@ -25,6 +25,8 @@ #define _FP_NANSIGN_Q 0 #define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 0 + /* From my experiments it seems X is chosen unless one of the NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */ #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ diff --git a/ports/sysdeps/alpha/soft-fp/sfp-machine.h b/ports/sysdeps/alpha/soft-fp/sfp-machine.h index 343464c3a8..be266feccc 100644 --- a/ports/sysdeps/alpha/soft-fp/sfp-machine.h +++ b/ports/sysdeps/alpha/soft-fp/sfp-machine.h @@ -46,6 +46,7 @@ #define _FP_NANSIGN_Q 0 #define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 0 /* Alpha Architecture Handbook, 4.7.10.4 sez that we should prefer any type of NaN in Fb, then Fa. */ diff --git a/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h b/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h index c81067dfd7..1bdde5ace8 100644 --- a/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h +++ b/ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h @@ -17,14 +17,16 @@ #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y) #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) -#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) -#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) -#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 +#define _FP_NANFRAC_S (_FP_QNANBIT_S - 1) +#define _FP_NANFRAC_D (_FP_QNANBIT_D - 1) +#define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1 #define _FP_NANSIGN_S 0 #define _FP_NANSIGN_D 0 #define _FP_NANSIGN_Q 0 #define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 1 + /* From my experiments it seems X is chosen unless one of the NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */ #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ diff --git a/ports/sysdeps/mips/soft-fp/sfp-machine.h b/ports/sysdeps/mips/soft-fp/sfp-machine.h index 3b2a40f0e2..8ccfaa60fd 100644 --- a/ports/sysdeps/mips/soft-fp/sfp-machine.h +++ b/ports/sysdeps/mips/soft-fp/sfp-machine.h @@ -14,14 +14,16 @@ #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) -#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) -#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 -#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 +#define _FP_NANFRAC_S (_FP_QNANBIT_S - 1) +#define _FP_NANFRAC_D (_FP_QNANBIT_D - 1), -1 +#define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1, -1, -1 #define _FP_NANSIGN_S 0 #define _FP_NANSIGN_D 0 #define _FP_NANSIGN_Q 0 #define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 1 + /* From my experiments it seems X is chosen unless one of the NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */ #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ diff --git a/ports/sysdeps/powerpc/soft-fp/sfp-machine.h b/ports/sysdeps/powerpc/soft-fp/sfp-machine.h index 8a9afad3e6..c2a190e7ef 100644 --- a/ports/sysdeps/powerpc/soft-fp/sfp-machine.h +++ b/ports/sysdeps/powerpc/soft-fp/sfp-machine.h @@ -22,6 +22,7 @@ #define _FP_NANSIGN_Q 0 #define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 0 /* Someone please check this. */ #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ |