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Have configure check for use of %lld for int64, and if that fails, check for

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use of %qd...a more generic solution then having #ifdef __<INSERT OS HERE>__
in the code...
This commit is contained in:
Marc G. Fournier 1999-03-08 04:17:33 +00:00
parent a431aaec44
commit 75007a72d6
4 changed files with 679 additions and 435 deletions
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1054
src/configure vendored
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File diff suppressed because it is too large Load Diff

46
src/configure.in
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@ -788,7 +788,7 @@ dnl If we found "long int" is 64 bits, assume snprintf handles it.
dnl If we found we need to use "long long int", better check.
if [[ x$SNPRINTF = x -a $HAVE_LONG_LONG_INT_64 -eq 1 ]] ; then
AC_MSG_CHECKING(whether snprintf handles 'long long int')
AC_MSG_CHECKING(whether snprintf handles 'long long int' as %lld)
AC_TRY_RUN([#include <stdio.h>
typedef long long int int64;
#define INT64_FORMAT "%lld"
@ -813,11 +813,45 @@ int does_int64_snprintf_work()
main() {
exit(! does_int64_snprintf_work());
}],
AC_MSG_RESULT(yes),
[SNPRINTF='snprintf.o'
AC_MSG_RESULT(no)],
[SNPRINTF='snprintf.o'
AC_MSG_RESULT(assuming not on target machine)])
[ AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INT64_AS_LLD) ],
[ AC_MSG_RESULT(no)
AC_MSG_CHECKING(whether snprintf handles 'long long int' as %qd)
AC_TRY_RUN([#include <stdio.h>
typedef long long int int64;
#define INT64_FORMAT "%qd"
int64 a = 20000001;
int64 b = 40000005;
int does_int64_snprintf_work()
{
int64 c;
char buf[100];
if (sizeof(int64) != 8)
return 0; /* doesn't look like the right size */
c = a * b;
snprintf(buf, 100, INT64_FORMAT, c);
if (strcmp(buf, "800000140000005") != 0)
return 0; /* either multiply or snprintf is busted */
return 1;
}
main() {
exit(! does_int64_snprintf_work());
}],
[ AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INT64_AS_QD) ],
[ SNPRINTF='snprintf.o'
AC_MSG_RESULT(no)],
[ SNPRINTF='snprintf.o'
AC_MSG_RESULT(assuming not on target machine)]) ],
[ SNPRINTF='snprintf.o'
AC_MSG_RESULT(no)],
[ SNPRINTF='snprintf.o'
AC_MSG_RESULT(assuming not on target machine)])
fi

6
src/include/config.h.in
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@ -281,6 +281,12 @@ extern void srandom(unsigned int seed);
/* Set to 1 if your DBL_MIN is problematic */
#undef HAVE_DBL_MIN_PROBLEM
/* Set to 1 if your snprintf has %lld for 'long long int' */
#undef HAVE_INT64_AS_LLD
/* Set to 1 if your snprintf has %qd for 'long long int' */
#undef HAVE_INT64_AS_QD
/* Set to 1 if type "long int" works and is 64 bits */
#undef HAVE_LONG_INT_64

8
src/include/utils/int8.h
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@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: int8.h,v 1.10 1999/02/13 23:22:23 momjian Exp $
* $Id: int8.h,v 1.11 1999/03/08 04:17:33 scrappy Exp $
*
* NOTES
* These data types are supported on all 64-bit architectures, and may
@ -33,7 +33,11 @@ typedef long int int64;
/* We have working support for "long long int", use that */
typedef long long int int64;
#define INT64_FORMAT "%lld"
#ifdef HAVE_INT64_AS_LLD
# define INT64_FORMAT "%lld"
#elif HAVE_INT64_AS_QD
# define INT64_FORMAT "%qd"
#endif
#else
/* Won't actually work, but fall back to long int so that int8.c compiles */
typedef long int int64;