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| author | Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> | 2019-07-11 11:48:28 -0300 |
|---|---|---|
| committer | Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> | 2019-12-13 19:06:02 -0300 |
| commit | 39a7b82283cab9dbfc119d8411d26d55a65f5eb4 (patch) | |
| tree | 74a7c8d739205d232fbf6d113d8ab3001d0fcb16 /libio/stdio.h | |
| parent | b851fea5c875acdca549103493d0439e91360d7e (diff) | |
| download | glibc-gabriel/powerpc-ieee128-printscan.zip glibc-gabriel/powerpc-ieee128-printscan.tar.gz glibc-gabriel/powerpc-ieee128-printscan.tar.bz2 | |
RFC: powerpc64le: Enable support for IEEE long doublegabriel/powerpc-ieee128-printscan
Not for glibc-2.31 - Do not commit!
No changes since v3.
Changes since v2:
- Added definition of LDBL_IBM128_COMPAT_VERSION and
LDBL_IBM128_VERSION (moved from a previous commit).
Changes since v1:
- Use __LONG_DOUBLE_USES_FLOAT128 directly.
-- 8< --
On platforms where long double may have two different formats, i.e.: the
same format as double (64-bits) or something else (128-bits), building
with -mlong-double-128 is the default and function calls in the user
program match the name of the function in Glibc. When building with
-mlong-double-64, Glibc installed headers redirect such calls to the
appropriate function.
This patch adds similar redirections to be used by user code builds in
IEEE long double mode (-mabi=ieeelongdouble). It also skips some uses
of libc_hidden_proto in internal headers, because they also produce
redirections, causing a redirection conflict.
PS: Missing NEWS entry.
Diffstat (limited to 'libio/stdio.h')
| -rw-r--r-- | libio/stdio.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/libio/stdio.h b/libio/stdio.h index 1abce9b..819d0a6 100644 --- a/libio/stdio.h +++ b/libio/stdio.h @@ -400,9 +400,12 @@ extern int sscanf (const char *__restrict __s, const char *__restrict __format, ...) __THROW; /* For historical reasons, the C99-compliant versions of the scanf - functions are at alternative names. When __LDBL_COMPAT is in - effect, this is handled in bits/stdio-ldbl.h. */ -#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT + functions are at alternative names. When __LDBL_COMPAT or + __LONG_DOUBLE_USES_FLOAT128 are in effect, this is handled in + bits/stdio-ldbl.h. */ +#include <bits/floatn.h> +#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \ + && __LONG_DOUBLE_USES_FLOAT128 == 0 # ifdef __REDIRECT extern int __REDIRECT (fscanf, (FILE *__restrict __stream, const char *__restrict __format, ...), @@ -447,7 +450,8 @@ extern int vsscanf (const char *__restrict __s, /* Same redirection as above for the v*scanf family. */ # if !__GLIBC_USE (DEPRECATED_SCANF) -# if defined __REDIRECT && !defined __LDBL_COMPAT +# if defined __REDIRECT && !defined __LDBL_COMPAT \ + && __LONG_DOUBLE_USES_FLOAT128 == 0 extern int __REDIRECT (vfscanf, (FILE *__restrict __s, const char *__restrict __format, __gnuc_va_list __arg), @@ -866,7 +870,9 @@ extern int __overflow (FILE *, int); #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function # include <bits/stdio2.h> #endif -#ifdef __LDBL_COMPAT + +#include <bits/floatn.h> +#if defined __LDBL_COMPAT || __LONG_DOUBLE_USES_FLOAT128 == 1 # include <bits/stdio-ldbl.h> #endif |