mirror of git://sourceware.org/git/glibc.git
ldbl-128ibm-compat: Add regular character scanning functions
The 'mode' argument to __vfscanf_internal allows the selection of the long double format for all long double arguments requested by the format string. Currently, there are two possibilities: long double with the same format as double or long double as something else. The 'something else' format varies between architectures, and on powerpc64le, it means IBM Extended Precision format. In preparation for the third option of long double format on powerpc64le, this patch uses the new mode mask, SCANF_LDBL_USES_FLOAT128, which tells __vfscanf_internal to call __strtof128_internal, instead of __strtold_internal, and save the output into a _Float128 variable. Tested for powerpc64le. Reviewed-By: Paul E. Murphy <murphyp@linux.ibm.com>
This commit is contained in:
Gabriel F. T. Gomes
parent
c2f959ed5f
commit
a5b15bdec8
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@ -17,15 +17,23 @@ ldbl-extra-routines += printf_size \
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wprintf \
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vfwprintf \
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vswprintf \
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vwprintf
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vwprintf \
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fscanf \
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scanf \
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sscanf \
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vfscanf \
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vscanf \
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vsscanf
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# Printing long double values with IEEE binary128 format reuses part
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# of the internal float128 implementation (__printf_fp, __printf_fphex,
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# and __float128 variables and union members). Thus, the compilation of
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# the following functions, must have -mfloat128 and -mabi=ibmlongdouble
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# and __float128 variables and union members). Likewise, reading these
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# values reuses __strtof128_internal. Thus, the compilation of the
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# following functions, must have -mfloat128 and -mabi=ibmlongdouble
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# passed to the compiler.
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CFLAGS-vfprintf-internal.c += -mfloat128 -mabi=ibmlongdouble
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CFLAGS-vfwprintf-internal.c += -mfloat128 -mabi=ibmlongdouble
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CFLAGS-vfscanf-internal.c += -mfloat128 -mabi=ibmlongdouble
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# Basic tests for the implementation of long double with IEEE binary128
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# format and for the related redirections in installed headers.
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@ -37,6 +45,29 @@ tests-internal += test-wprintf-ieee128 test-wprintf-ibm128
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CFLAGS-test-wprintf-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
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CFLAGS-test-wprintf-ibm128.c += -mabi=ibmlongdouble -Wno-psabi
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tests-internal += test-scanf-ieee128 test-scanf-ibm128
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CFLAGS-test-scanf-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
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CFLAGS-test-scanf-ibm128.c += -mabi=ibmlongdouble -Wno-psabi
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$(objpfx)test-scanf-ieee128: gnulib-tests += $(f128-loader-link)
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)test-scanf-ieee128.out
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tests-special += $(objpfx)test-scanf-ibm128.out
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endif
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$(objpfx)test-scanf-ieee128.out: \
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../sysdeps/ieee754/ldbl-128ibm-compat/test-scanf-ldbl-compat.sh \
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$(objpfx)test-scanf-ieee128
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$(SHELL) $^ '$(test-program-prefix)' $@; \
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$(evaluate-test)
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$(objpfx)test-scanf-ibm128.out: \
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../sysdeps/ieee754/ldbl-128ibm-compat/test-scanf-ldbl-compat.sh \
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$(objpfx)test-scanf-ibm128
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$(SHELL) $^ '$(test-program-prefix)' $@; \
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$(evaluate-test)
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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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@ -164,5 +164,13 @@ libc {
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__vfwprintf_chkieee128;
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__vswprintf_chkieee128;
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__vwprintf_chkieee128;
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__fscanfieee128;
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__scanfieee128;
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__sscanfieee128;
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__vfscanfieee128;
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__vscanfieee128;
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__vsscanfieee128;
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}
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}
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@ -0,0 +1,34 @@
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/* Wrapper for fscanf. IEEE128 version.
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Copyright (C) 2019 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 <stdarg.h>
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#include <libio/libioP.h>
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extern int
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___ieee128_fscanf (FILE *fp, const char *format, ...)
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{
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va_list arg;
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int done;
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va_start (arg, format);
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done = __vfscanf_internal (fp, format, arg, SCANF_LDBL_USES_FLOAT128);
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va_end (arg);
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return done;
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}
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strong_alias (___ieee128_fscanf, __fscanfieee128)
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@ -0,0 +1,34 @@
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/* Wrapper for scanf. IEEE128 version.
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Copyright (C) 2019 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 <stdarg.h>
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#include <libio/libioP.h>
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extern int
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___ieee128_scanf (const char *format, ...)
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{
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va_list arg;
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int done;
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va_start (arg, format);
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done = __vfscanf_internal (stdin, format, arg, SCANF_LDBL_USES_FLOAT128);
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va_end (arg);
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return done;
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}
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strong_alias (___ieee128_scanf, __scanfieee128)
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@ -0,0 +1,38 @@
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/* Wrapper for sscanf. IEEE128 version.
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Copyright (C) 2019 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 <stdarg.h>
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#include <strfile.h>
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#include <libioP.h>
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extern int
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___ieee128_sscanf (const char *string, const char *format, ...)
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{
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va_list arg;
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int done;
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_IO_strfile sf;
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FILE *fp = _IO_strfile_read (&sf, string);
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va_start (arg, format);
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done = __vfscanf_internal (fp, format, arg, SCANF_LDBL_USES_FLOAT128);
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va_end (arg);
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return done;
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}
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strong_alias (___ieee128_sscanf, __sscanfieee128)
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@ -0,0 +1,26 @@
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/* Wrapper for vfscanf. IEEE128 version.
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Copyright (C) 2019 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 <libio/libioP.h>
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extern int
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___ieee128_vfscanf (FILE *fp, const char *format, va_list ap)
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{
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return __vfscanf_internal (fp, format, ap, SCANF_LDBL_USES_FLOAT128);
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}
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strong_alias (___ieee128_vfscanf, __vfscanfieee128)
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@ -0,0 +1,26 @@
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/* Wrapper for vscanf. IEEE128 version.
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Copyright (C) 2019 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 <libio/libioP.h>
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extern int
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___ieee128_vscanf (const char *format, va_list ap)
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{
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return __vfscanf_internal (stdin, format, ap, SCANF_LDBL_USES_FLOAT128);
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}
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strong_alias (___ieee128_vscanf, __vscanfieee128)
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@ -0,0 +1,29 @@
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/* Wrapper for vsscanf. IEEE128 version.
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Copyright (C) 2019 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 <strfile.h>
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#include <libioP.h>
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extern int
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___ieee128_vsscanf (const char *string, const char *format, va_list ap)
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{
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_IO_strfile sf;
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FILE *fp = _IO_strfile_read (&sf, string);
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return __vfscanf_internal (fp, format, ap, SCANF_LDBL_USES_FLOAT128);
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}
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strong_alias (___ieee128_vsscanf, __vsscanfieee128)
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@ -0,0 +1 @@
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#include <test-scanf-ldbl-compat.c>
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@ -0,0 +1 @@
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#include <test-scanf-ldbl-compat.c>
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@ -0,0 +1,117 @@
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/* Test for the long double variants of *scanf functions.
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Copyright (C) 2019 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 <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <wchar.h>
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#include <support/check.h>
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#define CLEAR \
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va_start (args, format); \
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ld = va_arg (args, long double *); \
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*ld = 0; \
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va_end (args);
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#define CLEAR_VALUE value = 0;
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#define CHECK \
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va_start (args, format); \
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ld = va_arg (args, long double *); \
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va_end (args); \
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if (*ld == -1.0L) \
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printf ("OK"); \
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else \
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printf ("ERROR (%.60Lf)", *ld); \
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printf ("\n");
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#define CHECK_VALUE \
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if (value == -1.0L) \
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printf ("OK"); \
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else \
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printf ("ERROR (%.60Lf)", value); \
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printf ("\n");
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static void
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do_test_call (FILE *stream, CHAR *string, const CHAR *format, ...)
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{
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long double value;
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long double *ld;
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va_list args;
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CLEAR_VALUE
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printf ("fscanf: ");
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FSCANF (stream, format, &value);
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CHECK_VALUE
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CLEAR_VALUE
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printf ("scanf: ");
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SCANF (format, &value);
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CHECK_VALUE
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CLEAR_VALUE
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printf ("sscanf: ");
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SSCANF (string, format, &value);
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CHECK_VALUE
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CLEAR
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printf ("vfscanf: ");
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va_start (args, format);
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VFSCANF (stream, format, args);
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va_end (args);
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CHECK
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CLEAR
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printf ("vscanf: ");
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va_start (args, format);
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VSCANF (format, args);
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va_end (args);
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CHECK
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CLEAR
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printf ("vsscanf: ");
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va_start (args, format);
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VSSCANF (string, format, args);
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va_end (args);
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CHECK
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}
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static int
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do_test (void)
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{
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CHAR string[256];
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long double ld;
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/* Scan in decimal notation. */
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STRCPY (string,
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L ("-1.0\n")
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L ("-1.0\n") );
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do_test_call (stdin, string, L("%Lf"), &ld);
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/* Scan in hexadecimal notation. */
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STRCPY (string,
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L ("-0x1.0p+0\n")
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L ("-0x1.0p+0\n") );
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do_test_call (stdin, string, L("%La"), &ld);
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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 +1,10 @@
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#define CHAR char
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#define L(x) x
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#define FSCANF fscanf
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#define SSCANF sscanf
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#define SCANF scanf
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#define VFSCANF vfscanf
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#define VSSCANF vsscanf
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#define VSCANF vscanf
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#define STRCPY strcpy
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#include <test-scanf-ldbl-compat-template.c>
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@ -0,0 +1,63 @@
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#!/bin/sh
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# Testing of *scanf. IEEE binary128 for powerpc64le version.
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# Copyright (C) 2019 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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|
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# The GNU C Library is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU Lesser General Public
|
||||
# License as published by the Free Software Foundation; either
|
||||
# version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
# The GNU C Library is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
# Lesser General Public License for more details.
|
||||
|
||||
# You should have received a copy of the GNU Lesser General Public
|
||||
# License along with the GNU C Library; if not, see
|
||||
# <http://www.gnu.org/licenses/>.
|
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|
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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=$1; shift
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status=0
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cat <<'EOF' |
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-1.000000000000000000000000000000000000000000000000000000000000
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-1.000000000000000000000000000000000000000000000000000000000000
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-1.000000000000000000000000000000000000000000000000000000000000
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-1.000000000000000000000000000000000000000000000000000000000000
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-0x1.000000000000000000000000000000000000000000000000000000000000p+0
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-0x1.000000000000000000000000000000000000000000000000000000000000p+0
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-0x1.000000000000000000000000000000000000000000000000000000000000p+0
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-0x1.000000000000000000000000000000000000000000000000000000000000p+0
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EOF
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${test_program_prefix} \
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${test_program} \
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- \
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> ${test_program_output} || status=1
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cat <<'EOF' |
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fscanf: OK
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scanf: OK
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sscanf: OK
|
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vfscanf: OK
|
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vscanf: OK
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vsscanf: OK
|
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fscanf: OK
|
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scanf: OK
|
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sscanf: OK
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vfscanf: OK
|
||||
vscanf: OK
|
||||
vsscanf: OK
|
||||
EOF
|
||||
cmp - ${test_program_output} > /dev/null 2>&1 ||
|
||||
{
|
||||
status=1
|
||||
echo "*** output comparison failed"
|
||||
}
|
||||
|
||||
exit $status
|
||||
Loading…
Reference in New Issue