ldbl-128ibm-compat: Add printf_size
Since the addition of the _Float128 API, strfromf128 and printf_size use __printf_fp to print _Float128 values. This is achieved by setting the 'is_binary128' member of the 'printf_info' structure to one. Now that the format of long double on powerpc64le is getting a third option, this mechanism is reused for long double values that have binary128 format (i.e.: when -mabi=ieeelongdouble). This patch adds __printf_sizeieee128 as an exported symbol, but doesn't provide redirections from printf_size, yet. All redirections will be installed in a future commit, once all other functions that print or read long double values with binary128 format are ready. In __printf_fp, when 'is_binary128' is one, the floating-point argument is treated as if it was of _Float128 type, regardless of the value of 'is_long_double', thus __printf_sizeieee128 sets 'is_binary128' to the same value of 'is_long_double'. Otherwise, double values would not be printed correctly. Tested for powerpc64le.
This commit is contained in:
Gabriel F. T. Gomes
parent
2b445206a1
commit
b7b88cea41
27
ChangeLog
27
ChangeLog
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@ -1,3 +1,30 @@
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2018-07-02 Gabriel F. T. Gomes <gabriel@inconstante.eti.br>
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* stdio-common/Makefile (test-srcs): Add tst-printfsz-islongdouble.
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(tests-special) Add $(objpfx)tst-printfsz-islongdouble.out.
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($(objpfx)tst-printfsz-islongdouble.out): New build and run rule.
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* stdio-common/tst-printfsz-islongdouble.c: New file.
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* stdio-common/tst-printfsz-islongdouble.sh: Likewise.
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* sysdeps/ieee754/ldbl-128ibm-compat/Makefile:
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[subdir == stdio-common] (routines): Add ieee128-printf_size.
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[subdir == stdio-common] (tests-internal): Add
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test-printf-size-ieee128, and test-printf-size-ibm128.
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[subdir == stdio-common] (CFLAGS-test-printf-size-ieee128.c)
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(CFLAGS-test-printf-size-ibm128.c): New variables.
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[subdir == stdio-common] (tests-special): Add
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$(objpfx)test-printf-size-ieee128.out and
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$(objpfx)test-printf-size-ibm128.out.
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[subdir == stdio-common] ($(objpfx)test-printf-size-ieee128.out)
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($(objpfx)test-printf-size-ibm128.out): New build and run rules.
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* sysdeps/ieee754/ldbl-128ibm-compat/Versions (libc): Add
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__printf_sizeieee128.
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* sysdeps/ieee754/ldbl-128ibm-compat/ieee128-printf_size.c:
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New file.
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* sysdeps/ieee754/ldbl-128ibm-compat/test-printf-size-ibm128.c:
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Likewise.
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* sysdeps/ieee754/ldbl-128ibm-compat/test-printf-size-ieee128.c:
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Likewise.
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2018-07-02 Szabolcs Nagy <szabolcs.nagy@arm.com>
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* sysdeps/ieee754/flt-32/e_powf.c (__powf): Use uint32_t.
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@ -63,13 +63,14 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \
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tst-vfprintf-mbs-prec \
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tst-scanf-round \
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test-srcs = tst-unbputc tst-printf
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test-srcs = tst-unbputc tst-printf tst-printfsz-islongdouble
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)tst-unbputc.out $(objpfx)tst-printf.out \
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$(objpfx)tst-printf-bz18872-mem.out \
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$(objpfx)tst-setvbuf1-cmp.out \
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$(objpfx)tst-vfprintf-width-prec-mem.out
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$(objpfx)tst-vfprintf-width-prec-mem.out \
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$(objpfx)tst-printfsz-islongdouble.out
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generated += tst-printf-bz18872.c tst-printf-bz18872.mtrace \
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tst-printf-bz18872-mem.out \
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tst-vfprintf-width-prec.mtrace tst-vfprintf-width-prec-mem.out
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@ -103,6 +104,11 @@ $(objpfx)tst-printf.out: tst-printf.sh $(objpfx)tst-printf
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$(SHELL) $< $(common-objpfx) '$(test-program-prefix)' > $@; \
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$(evaluate-test)
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$(objpfx)tst-printfsz-islongdouble.out: \
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tst-printfsz-islongdouble.sh $(objpfx)tst-printfsz-islongdouble
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$(SHELL) $^ '$(test-program-prefix)' $@; \
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$(evaluate-test)
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# We generate this source because it requires a printf invocation with
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# 10K arguments.
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$(objpfx)tst-printf-bz18872.c: tst-printf-bz18872.sh
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@ -0,0 +1,51 @@
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/* Test for the behaviour of 'is_long_double' in printf_size.
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Copyright (C) 2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <printf.h>
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#include <stdio.h>
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#include <string.h>
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#include <support/check.h>
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static int
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do_test (void)
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{
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double d = 2000;
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double *dptr = &d;
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long double ld = 4000;
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long double *ldptr = & ld;
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struct printf_info info;
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memset (&info, 0, sizeof (info));
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info.spec = L'f';
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/* Print a value with double type. */
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printf_size (stdout, &info, (void *) &dptr);
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/* Printf a value with long double type. */
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info.is_long_double = 1;
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printf_size (stdout, &info, (void *) &ldptr);
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/* Setting both 'is_long_double' and 'is_binary128' to one is out of
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the scope of this test, because such configuration is only valid
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when _Float128 and long double are ABI-distinct (which is not
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always true in this arch-independent test). */
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return 0;
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}
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#include <support/test-driver.c>
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@ -0,0 +1,38 @@
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#!/bin/sh
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# Test for the behaviour of 'is_binary128' in printf_size.
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# Copyright (C) 2018 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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set -e
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test_program=$1; shift
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test_program_prefix=$1; shift
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test_program_output=$1; shift
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status=0
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${test_program_prefix} \
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${test_program} \
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> ${test_program_output} || status=1
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echo -n "2k4k" | cmp - ${test_program_output} > /dev/null 2>&1 ||
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{
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status=1
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echo "*** output comparison failed"
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}
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exit $status
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@ -0,0 +1,22 @@
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ifeq ($(subdir),stdio-common)
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routines += ieee128-printf_size
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tests-internal += test-printf-size-ieee128 test-printf-size-ibm128
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CFLAGS-test-printf-size-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
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CFLAGS-test-printf-size-ibm128.c += -mabi=ibmlongdouble -Wno-psabi
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)test-printf-size-ieee128.out
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tests-special += $(objpfx)test-printf-size-ibm128.out
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endif
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$(objpfx)test-printf-size-ieee128.out: \
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tst-printfsz-islongdouble.sh $(objpfx)test-printf-size-ieee128
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$(SHELL) $^ '$(test-program-prefix)' $@; \
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$(evaluate-test)
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$(objpfx)test-printf-size-ibm128.out: \
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tst-printfsz-islongdouble.sh $(objpfx)test-printf-size-ibm128
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$(SHELL) $^ '$(test-program-prefix)' $@; \
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$(evaluate-test)
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endif
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@ -118,4 +118,6 @@ libc {
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__strtoieee128_l;
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__wcstoieee128;
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__wcstoieee128_l;
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__printf_sizeieee128;
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}
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@ -0,0 +1,32 @@
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/* Wrapper for printf_size. IEEE128 version.
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Copyright (C) 2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <printf.h>
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extern __typeof (printf_size) __printf_size;
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int
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___ieee128_printf_size (FILE *fp, const struct printf_info *info,
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const void *const *args)
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{
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struct printf_info info_ieee128 = *info;
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info_ieee128.is_binary128 = info->is_long_double;
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return __printf_size (fp, &info_ieee128, args);
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}
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strong_alias (___ieee128_printf_size, __printf_sizeieee128)
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@ -0,0 +1 @@
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#include <tst-printfsz-islongdouble.c>
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@ -0,0 +1 @@
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#include <tst-printfsz-islongdouble.c>
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