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Kirill Smelkov
mariadb
Commits
4ee0f6a6
Commit
4ee0f6a6
authored
Mar 25, 2009
by
Alexey Kopytov
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Automerge.
parents
77cc537e
bbe24f03
Changes
2
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2 changed files
with
33 additions
and
2 deletions
+33
-2
configure.in
configure.in
+21
-0
include/my_global.h
include/my_global.h
+12
-2
No files found.
configure.in
View file @
4ee0f6a6
...
@@ -2094,6 +2094,27 @@ esac
...
@@ -2094,6 +2094,27 @@ esac
AC_MSG_CHECKING
(
for
isinf
in
<math.h>
)
AC_MSG_CHECKING
(
for
isinf
in
<math.h>
)
AC_TRY_LINK
([
#include <math.h>], [float f = 0.0; int r = isinf(f); return r],
AC_TRY_LINK
([
#include <math.h>], [float f = 0.0; int r = isinf(f); return r],
AC_MSG_RESULT
(
yes
)
AC_MSG_RESULT
(
yes
)
AC_MSG_CHECKING
(
whether isinf
()
is safe to use
in
C code
)
AC_TRY_RUN
([
#include <math.h>
int main
()
{
double
a
=
10.0
;
double
b
=
1e308
;
return
!
isinf
(
a
*
b
)
;
}
]
,
[
AC_MSG_RESULT
(
yes
)]
,
[
AC_MSG_RESULT
(
no
)
AC_DEFINE
([
HAVE_BROKEN_ISINF],
[
1],
[
Define to 1
if
isinf
()
uses 80-bit register
for
intermediate values]
)
]
,
[
# Let's be optimistic when cross-compiling, since the only compiler known
# to be affected by this isinf() bug is GCC 4.3 on 32-bit x86.
AC_MSG_RESULT
([[
cross-compiling, assuming
'yes'
]])
])
AC_MSG_CHECKING
(
whether isinf
()
can be used
in
C++ code
)
AC_MSG_CHECKING
(
whether isinf
()
can be used
in
C++ code
)
AC_LANG_SAVE
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_LANG_CPLUSPLUS
...
...
include/my_global.h
View file @
4ee0f6a6
...
@@ -831,9 +831,19 @@ typedef SOCKET_SIZE_TYPE size_socket;
...
@@ -831,9 +831,19 @@ typedef SOCKET_SIZE_TYPE size_socket;
#endif
#endif
#ifdef HAVE_ISINF
#ifdef HAVE_ISINF
/* isinf() can be used in both C and C++ code */
/* Check if C compiler is affected by GCC bug #39228 */
#define my_isinf(X) isinf(X)
#if !defined(__cplusplus) && defined(HAVE_BROKEN_ISINF)
/* Force store/reload of the argument to/from a 64-bit double */
static
inline
double
my_isinf
(
double
x
)
{
volatile
double
t
=
x
;
return
isinf
(
t
);
}
#else
#else
/* System-provided isinf() is available and safe to use */
#define my_isinf(X) isinf(X)
#endif
#else
/* !HAVE_ISINF */
#define my_isinf(X) (!finite(X) && !isnan(X))
#define my_isinf(X) (!finite(X) && !isnan(X))
#endif
#endif
...
...
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