database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-10-12 07:05:03 +03:00
Code Activity

Add #define INT64_MODIFIER for the printf length modifier for 64-bit ints.

Browse Source 
We have had INT64_FORMAT and UINT64_FORMAT for a long time, but that's not
good enough if you want something more exotic, like "%20lld".

Abhijit Menon-Sen, per Andres Freund's suggestion.
This commit is contained in:
Heikki Linnakangas
2014-08-21 09:56:44 +03:00
parent fa069822f5
commit ce486056ec
6 changed files with 49 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
config/c-library.m4
View File

@@ -221,22 +221,22 @@ HAVE_POSIX_SIGNALS=$pgac_cv_func_posix_signals
AC_SUBST(HAVE_POSIX_SIGNALS)])# PGAC_FUNC_POSIX_SIGNALS
# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_MODIFIER
# ---------------------------------------
# Determine which format snprintf uses for long long int. We handle
# %lld, %qd, %I64d. The result is in shell variable
# LONG_LONG_INT_FORMAT.
# Determine which length modifier snprintf uses for long long int. We
# handle ll, q, and I64. The result is in shell variable
# LONG_LONG_INT_MODIFIER.
#
# MinGW uses '%I64d', though gcc throws an warning with -Wall,
# while '%lld' doesn't generate a warning, but doesn't work.
#
AC_DEFUN([PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT],
[AC_MSG_CHECKING([snprintf format for long long int])
AC_CACHE_VAL(pgac_cv_snprintf_long_long_int_format,
[for pgac_format in '%lld' '%qd' '%I64d'; do
AC_DEFUN([PGAC_FUNC_SNPRINTF_LONG_LONG_INT_MODIFIER],
[AC_MSG_CHECKING([snprintf length modifier for long long int])
AC_CACHE_VAL(pgac_cv_snprintf_long_long_int_modifier,
[for pgac_modifier in 'll' 'q' 'I64'; do
AC_TRY_RUN([#include <stdio.h>
typedef long long int ac_int64;
#define INT64_FORMAT "$pgac_format"
#define INT64_FORMAT "%${pgac_modifier}d"
ac_int64 a = 20000001;
ac_int64 b = 40000005;
@@ -258,19 +258,19 @@ int does_int64_snprintf_work()
main() {
exit(! does_int64_snprintf_work());
}],
[pgac_cv_snprintf_long_long_int_format=$pgac_format; break],
[pgac_cv_snprintf_long_long_int_modifier=$pgac_modifier; break],
[],
[pgac_cv_snprintf_long_long_int_format=cross; break])
[pgac_cv_snprintf_long_long_int_modifier=cross; break])
done])dnl AC_CACHE_VAL
LONG_LONG_INT_FORMAT=''
LONG_LONG_INT_MODIFIER=''
case $pgac_cv_snprintf_long_long_int_format in
case $pgac_cv_snprintf_long_long_int_modifier in
cross) AC_MSG_RESULT([cannot test (not on host machine)]);;
?*) AC_MSG_RESULT([$pgac_cv_snprintf_long_long_int_format])
LONG_LONG_INT_FORMAT=$pgac_cv_snprintf_long_long_int_format;;
?*) AC_MSG_RESULT([$pgac_cv_snprintf_long_long_int_modifier])
LONG_LONG_INT_MODIFIER=$pgac_cv_snprintf_long_long_int_modifier;;
*) AC_MSG_RESULT(none);;
esac])# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
esac])# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_MODIFIER
# PGAC_FUNC_SNPRINTF_ARG_CONTROL