923a5384a0
The "gnulib" package contains a number of floating-point test cases
that do not work correctly with the PowerPC long double ("double double")
format. These tests "accidentally" succeeded anyway in the big-endian
variant, but are now actually failing in little-endian mode.
As is usual for gnulib, those tests end up copied into the source code
of various packages that use gnulib, including coreutils, findutils,
grep, and libunistring.
A patch to fix the tests for ppc64le has been submitted to upstream
to the bug-gnulib mailing list. We'll work with upstream of the
other affected packages to make sure the copies are refreshed.
- grep-gnulib-ppc64le.patch: Fix imported gnulib long double math
tests for little-endian PowerPC.
OBS-URL: https://build.opensuse.org/request/show/211831
OBS-URL: https://build.opensuse.org/package/show/Base:System/grep?expand=0&rev=36
42 lines
1.7 KiB
Diff
42 lines
1.7 KiB
Diff
diff --git a/gnulib-tests/test-isnanl.h b/gnulib-tests/test-isnanl.h
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index 06e6a7c..2df10f8 100644
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--- a/gnulib-tests/test-isnanl.h
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+++ b/gnulib-tests/test-isnanl.h
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@@ -51,6 +51,15 @@ main ()
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/* A bit pattern that is different from a Quiet NaN. With a bit of luck,
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it's a Signalling NaN. */
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{
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+#if defined __powerpc__ && LDBL_MANT_DIG == 106
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+ /* This is PowerPC "double double", a pair of two doubles. Inf and Nan are
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+ represented as the corresponding 64-bit IEEE values in the first double;
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+ the second is ignored. Manipulate only the first double. */
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+ #undef NWORDS
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+ #define NWORDS \
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+ ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
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+#endif
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+
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memory_long_double m;
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m.value = NaNl ();
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# if LDBL_EXPBIT0_BIT > 0
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diff --git a/gnulib-tests/test-signbit.c b/gnulib-tests/test-signbit.c
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index e8ea097..7e24292 100644
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--- a/gnulib-tests/test-signbit.c
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+++ b/gnulib-tests/test-signbit.c
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@@ -151,6 +151,16 @@ test_signbitl ()
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#define NWORDS \
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((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
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typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double;
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+
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+#if defined __powerpc__ && LDBL_MANT_DIG == 106
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+ /* This is PowerPC "double double", a pair of two doubles. Inf and Nan are
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+ represented as the corresponding 64-bit IEEE values in the first double;
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+ the second is ignored. Manipulate only the first double. */
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+ #undef NWORDS
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+ #define NWORDS \
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+ ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
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+#endif
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+
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memory_long_double m;
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m.value = zerol / zerol;
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# if LDBL_EXPBIT0_BIT > 0
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