about summary refs log tree commit diff
path: root/ports/sysdeps
diff options
context:
space:
mode:
authorMaciej W. Rozycki <macro@codesourcery.com>2013-05-16 23:33:55 +0100
committerMaciej W. Rozycki <macro@codesourcery.com>2013-05-16 23:33:55 +0100
commit2848b105856e49d98f3c5026b6d8d790f9723c0c (patch)
tree66e6cc9d3c1c6d95324e50ceb1140d0eed52ec37 /ports/sysdeps
parentc58b274f01658400ba75886b04cb044ba9467a94 (diff)
downloadglibc-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.h2
-rw-r--r--ports/sysdeps/alpha/soft-fp/sfp-machine.h1
-rw-r--r--ports/sysdeps/mips/mips64/soft-fp/sfp-machine.h8
-rw-r--r--ports/sysdeps/mips/soft-fp/sfp-machine.h8
-rw-r--r--ports/sysdeps/powerpc/soft-fp/sfp-machine.h1
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)			\