+2009-04-24 Jeff johnston <jjohnstn@redhat.com>
+
+ * configure.in: Add configuration test for long double equals dbl
+ and set flag _LDBL_EQ_DBL if true.
+ * configure: Regenerated.
+ * newlib.hin: Add _LDBL_EQ_DBL flag.
+ * libc/include/math.h: Use _LDBL_EQ_DBL flag instead of
+ _HAVE_LDBL_MATH.
+ * libc/include/stdlib.h: Use _LDBL_EQ_DBL flag instead of
+ _HAVE_LDBL_STDLIB.
+ * libc/common/local.h: Remove _LDBL_EQ_DBL flag setting.
+ * libc/stdlib/local.h: Ditto.
+
2009-04-24 Joseph Myers <joseph@codesourcery.com>
* libc/include/stdint.h (UINTPTR_MAX): Define to __UINTPTR_MAX__
#define HAVE_INITFINI_ARRAY 1
_ACEOF
+fi
+
+echo "$as_me:$LINENO: checking long double equals double" >&5
+echo $ECHO_N "checking long double equals double... $ECHO_C" >&6
+if test "${newlib_ldbl_eq_dbl+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ cat > conftest.c <<EOF
+#include <float.h>
+#if DBL_MANT_DIG == LDBL_MANT_DIG && LDBL_MIN_EXP == DBL_MIN_EXP && \
+ LDBL_MAX_EXP == DBL_MAX_EXP
+ #define _LDBL_EQ_DBL
+ #else
+ #error "LDBL != DBL"
+#endif
+EOF
+if { ac_try='${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
+ -static -nostartfiles -nostdlib 1>&5'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }
+then
+ newlib_ldbl_eq_dbl=yes;
+else
+ newlib_ldbl_eq_dbl=no;
+fi
+rm -f conftest*
+fi
+echo "$as_me:$LINENO: result: $newlib_ldbl_eq_dbl" >&5
+echo "${ECHO_T}$newlib_ldbl_eq_dbl" >&6
+if test $newlib_ldbl_eq_dbl = yes; then
+ cat >>confdefs.h <<_ACEOF
+#define _LDBL_EQ_DBL 1
+_ACEOF
+
fi
ac_config_files="$ac_config_files Makefile"
AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY)
fi
+AC_CACHE_CHECK(long double equals double,
+ newlib_ldbl_eq_dbl, [dnl
+cat > conftest.c <<EOF
+#include <float.h>
+#if DBL_MANT_DIG == LDBL_MANT_DIG && LDBL_MIN_EXP == DBL_MIN_EXP && \
+ LDBL_MAX_EXP == DBL_MAX_EXP
+ #define _LDBL_EQ_DBL
+ #else
+ #error "LDBL != DBL"
+#endif
+EOF
+if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
+ -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
+then
+ newlib_ldbl_eq_dbl=yes;
+else
+ newlib_ldbl_eq_dbl=no;
+fi
+rm -f conftest*])
+if test $newlib_ldbl_eq_dbl = yes; then
+ AC_DEFINE_UNQUOTED(_LDBL_EQ_DBL)
+fi
+
AC_CONFIG_FILES([Makefile],
[if test -n "$CONFIG_FILES"; then
unset ac_file
extern float hypotf _PARAMS((float, float));
#endif /* ! defined (_REENT_ONLY) */
-/* On platforms where long double math functions are supported. */
-#ifdef _HAVE_LDBL_MATH
+/* On platforms where long double equals double. */
+#ifdef _LDBL_EQ_DBL
/* Reentrant ANSI C functions. */
#ifndef __math_68881
extern long double atanl _PARAMS((long double));
extern long double erfl _PARAMS((long double));
extern long double erfcl _PARAMS((long double));
#endif /* ! defined (_REENT_ONLY) */
-#else /* !_HAVE_LDBL_MATH */
+#else /* !_LDBL_EQ_DBL */
#ifdef __i386__
/* Other long double precision functions. */
extern _LONG_DOUBLE rintl _PARAMS((_LONG_DOUBLE));
extern long int lrintl _PARAMS((_LONG_DOUBLE));
extern _LONG_LONG_TYPE llrintl _PARAMS((_LONG_DOUBLE));
#endif /* __i386__ */
-#endif /* !_HAVE_LDBL_MATH */
+#endif /* !_LDBL_EQ_DBL */
#endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L */
_VOID _EXFUN(__eprintf,(const char *, const char *, unsigned int, const char *));
-/* On platforms where long double stdlib functions are supported. */
-#ifdef _HAVE_LDBL_STDLIB
+/* On platforms where long double equals double. */
+#ifdef _LDBL_EQ_DBL
extern long double strtold (const char *, char **);
extern long double wcstold (const wchar_t *, wchar_t **);
-#endif /* _HAVE_LDBL_STDLIB */
+#endif /* _LDBL_EQ_DBL */
_END_STD_C
extern wchar_t __cp_conv[12][0x80];
int __cp_index (const char *);
-#include <float.h>
-
-/* Check if long double is as wide as double. */
-#if (!defined(__STRICT_ANSI__) || __STDC_VERSION__ > 199901L || \
- defined(__cplusplus)) && defined(LDBL_MANT_DIG) && \
- (DBL_MANT_DIG == LDBL_MANT_DIG && LDBL_MIN_EXP == DBL_MIN_EXP && \
- LDBL_MAX_EXP == DBL_MAX_EXP)
- #define _LDBL_EQ_DBL
-#endif
#endif
-#include <float.h>
-
-/* Check if long double is as wide as double. */
-#if (!defined(__STRICT_ANSI__) || __STDC_VERSION__ > 199901L || \
- defined(__cplusplus)) && defined(LDBL_MANT_DIG) && \
- (DBL_MANT_DIG == LDBL_MANT_DIG && LDBL_MIN_EXP == DBL_MIN_EXP && \
- LDBL_MAX_EXP == DBL_MAX_EXP)
- #define _LDBL_EQ_DBL
-#endif
+/* placeholder for future usage. */
functions. */
#undef _ATEXIT_DYNAMIC_ALLOC
+/* True if long double supported and it is equal to double. */
+#undef _LDBL_EQ_DBL
+
/*
* Iconv encodings enabled ("to" direction)
*/