2009-05-15 Craig Howland <howland@LGSInnovations.com>
* configure.in: Add configuration test for long double type existing
and set flag _HAVE_LONG_DOUBLE if true. Fix INIT_ARRAY (.init_array)
and _LDBL_EQ_DBL tests to not link so that will work with
cross-compilers.
* configure: Regenerated.
* Makefile.in: Ditto.
* newlib.hin: Add _HAVE_LONG_DOUBLE flag.
* libc/include/math.h: Change non-builtin defines for HUGE_VAL,
HUGE_VALF, and HUGE_VALL to be constant expressions. Add definitions
for the non-builtin case for INFINITY and NAN. Gate HUGE_VALL and
union __ldmath definitions with (new) _HAVE_LONG_DOUBLE.
*libm/common/s_infconst.c: Change definitions to use values from
float.h instead of non-so-portable integer forms. Mark as being
deprecated (because now removed from math.h, are not used anywhere
in Newlib, itself).
This commit is contained in:
Jeff Johnston
parent
7aa710a782
commit
de8a5b7810
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@ -1,3 +1,21 @@
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2009-05-15 Craig Howland <howland@LGSInnovations.com>
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* configure.in: Add configuration test for long double type existing
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and set flag _HAVE_LONG_DOUBLE if true. Fix INIT_ARRAY (.init_array)
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and _LDBL_EQ_DBL tests to not link so that will work with
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cross-compilers.
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* configure: Regenerated.
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* Makefile.in: Ditto.
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* newlib.hin: Add _HAVE_LONG_DOUBLE flag.
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* libc/include/math.h: Change non-builtin defines for HUGE_VAL,
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HUGE_VALF, and HUGE_VALL to be constant expressions. Add definitions
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for the non-builtin case for INFINITY and NAN. Gate HUGE_VALL and
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union __ldmath definitions with (new) _HAVE_LONG_DOUBLE.
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*libm/common/s_infconst.c: Change definitions to use values from
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float.h instead of non-so-portable integer forms. Mark as being
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deprecated (because now removed from math.h, are not used anywhere
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in Newlib, itself).
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2009-05-15 Corinna Vinschen <corinna@vinschen.de>
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* libc/string/local.h: New file.
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@ -171,6 +171,8 @@ FGREP = @FGREP@
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GREP = @GREP@
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HAVE_DOC_FALSE = @HAVE_DOC_FALSE@
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HAVE_DOC_TRUE = @HAVE_DOC_TRUE@
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HAVE_LONG_DOUBLE_FALSE = @HAVE_LONG_DOUBLE_FALSE@
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HAVE_LONG_DOUBLE_TRUE = @HAVE_LONG_DOUBLE_TRUE@
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INSTALL_DATA = @INSTALL_DATA@
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INSTALL_PROGRAM = @INSTALL_PROGRAM@
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INSTALL_SCRIPT = @INSTALL_SCRIPT@
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@ -462,7 +462,7 @@ ac_subdirs_all="$ac_subdirs_all libc"
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ac_subdirs_all="$ac_subdirs_all libm"
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ac_subdirs_all="$ac_subdirs_all doc"
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ac_subdirs_all="$ac_subdirs_all iconvdata"
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ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAY_SUPPLY_SYSCALLS_TRUE MAY_SUPPLY_SYSCALLS_FALSE newlib_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB READELF ac_ct_READELF MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT CCAS CCASFLAGS NEWLIB_CFLAGS LDFLAGS ELIX_LEVEL_0_TRUE ELIX_LEVEL_0_FALSE ELIX_LEVEL_1_TRUE ELIX_LEVEL_1_FALSE ELIX_LEVEL_2_TRUE ELIX_LEVEL_2_FALSE ELIX_LEVEL_3_TRUE ELIX_LEVEL_3_FALSE ELIX_LEVEL_4_TRUE ELIX_LEVEL_4_FALSE USE_LIBTOOL_TRUE USE_LIBTOOL_FALSE OBJEXT oext aext lpfx libm_machine_dir machine_dir sys_dir SED DLLTOOL ac_ct_DLLTOOL OBJDUMP ac_ct_OBJDUMP LIBTOOL CFLAGS CPPFLAGS ac_ct_CC EXEEXT EGREP FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM LN_S lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP NEWLIB_HW_FP_TRUE NEWLIB_HW_FP_FALSE CC_FOR_NEWLIB subdirs HAVE_DOC_TRUE HAVE_DOC_FALSE EXTRA_DIRS CRT0 CRT0_DIR CRT1 CRT1_DIR LIBM_MACHINE_OBJECTLIST MACHINE_OBJECTLIST SYS_OBJECTLIST SYS_MACH_OBJECTLIST POSIX_OBJECTLIST SIGNAL_OBJECTLIST SYSCALL_OBJECTLIST UNIX_OBJECTLIST STDIO64_OBJECTLIST CC_FOR_BUILD libc_cv_initfinit_array LIBOBJS LTLIBOBJS'
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ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAY_SUPPLY_SYSCALLS_TRUE MAY_SUPPLY_SYSCALLS_FALSE newlib_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar CC DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB READELF ac_ct_READELF MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT CCAS CCASFLAGS NEWLIB_CFLAGS LDFLAGS ELIX_LEVEL_0_TRUE ELIX_LEVEL_0_FALSE ELIX_LEVEL_1_TRUE ELIX_LEVEL_1_FALSE ELIX_LEVEL_2_TRUE ELIX_LEVEL_2_FALSE ELIX_LEVEL_3_TRUE ELIX_LEVEL_3_FALSE ELIX_LEVEL_4_TRUE ELIX_LEVEL_4_FALSE USE_LIBTOOL_TRUE USE_LIBTOOL_FALSE OBJEXT oext aext lpfx libm_machine_dir machine_dir sys_dir SED DLLTOOL ac_ct_DLLTOOL OBJDUMP ac_ct_OBJDUMP LIBTOOL CFLAGS CPPFLAGS ac_ct_CC EXEEXT EGREP FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM LN_S lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 CPP NEWLIB_HW_FP_TRUE NEWLIB_HW_FP_FALSE CC_FOR_NEWLIB subdirs HAVE_DOC_TRUE HAVE_DOC_FALSE EXTRA_DIRS CRT0 CRT0_DIR CRT1 CRT1_DIR LIBM_MACHINE_OBJECTLIST MACHINE_OBJECTLIST SYS_OBJECTLIST SYS_MACH_OBJECTLIST POSIX_OBJECTLIST SIGNAL_OBJECTLIST SYSCALL_OBJECTLIST UNIX_OBJECTLIST STDIO64_OBJECTLIST CC_FOR_BUILD libc_cv_initfinit_array HAVE_LONG_DOUBLE_TRUE HAVE_LONG_DOUBLE_FALSE LIBOBJS LTLIBOBJS'
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ac_subst_files=''
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# Initialize some variables set by options.
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@ -11874,8 +11874,8 @@ int __start (void) { return 0; }
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int foo (void) { return 1; }
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int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
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EOF
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if { ac_try='${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
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-static -nostartfiles -nostdlib 1>&5'
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if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest conftest.c
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1>&5'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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@ -11902,8 +11902,59 @@ _ACEOF
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fi
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echo "$as_me:$LINENO: checking long double equals double" >&5
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echo $ECHO_N "checking long double equals double... $ECHO_C" >&6
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echo "$as_me:$LINENO: checking whether long double type exists" >&5
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echo $ECHO_N "checking whether long double type exists... $ECHO_C" >&6
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if test "${acnewlib_cv_type_long_double+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat > conftest.c <<EOF
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/* Check two ways: float.h defines and direct type declaration. */
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#include <float.h>
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#if defined(LDBL_MANT_DIG)
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#define _HAVE_LONG_DOUBLE
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#else
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#error "LDBL != DBL"
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#endif
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long double test() {
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long double ld = 0.0L;
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return ld;
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}
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EOF
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if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
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1>&5'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }
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then
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acnewlib_cv_type_long_double=yes;
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else
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acnewlib_cv_type_long_double=no;
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fi
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rm -f conftest*
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fi
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echo "$as_me:$LINENO: result: $acnewlib_cv_type_long_double" >&5
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echo "${ECHO_T}$acnewlib_cv_type_long_double" >&6
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if test $acnewlib_cv_type_long_double = yes; then
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cat >>confdefs.h <<_ACEOF
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#define _HAVE_LONG_DOUBLE 1
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_ACEOF
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fi
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if test x"$acnewlib_cv_type_long_double" = x"yes"; then
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HAVE_LONG_DOUBLE_TRUE=
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HAVE_LONG_DOUBLE_FALSE='#'
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else
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HAVE_LONG_DOUBLE_TRUE='#'
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HAVE_LONG_DOUBLE_FALSE=
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fi
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echo "$as_me:$LINENO: checking whether long double equals double" >&5
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echo $ECHO_N "checking whether long double equals double... $ECHO_C" >&6
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if test "${newlib_ldbl_eq_dbl+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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@ -11916,8 +11967,8 @@ else
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#error "LDBL != DBL"
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#endif
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EOF
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if { ac_try='${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
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-static -nostartfiles -nostdlib 1>&5'
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if { ac_try='${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
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1>&5'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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@ -12123,6 +12174,13 @@ echo "$as_me: error: conditional \"HAVE_DOC\" was never defined.
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Usually this means the macro was only invoked conditionally." >&2;}
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{ (exit 1); exit 1; }; }
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fi
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if test -z "${HAVE_LONG_DOUBLE_TRUE}" && test -z "${HAVE_LONG_DOUBLE_FALSE}"; then
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{ { echo "$as_me:$LINENO: error: conditional \"HAVE_LONG_DOUBLE\" was never defined.
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Usually this means the macro was only invoked conditionally." >&5
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echo "$as_me: error: conditional \"HAVE_LONG_DOUBLE\" was never defined.
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Usually this means the macro was only invoked conditionally." >&2;}
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{ (exit 1); exit 1; }; }
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fi
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: ${CONFIG_STATUS=./config.status}
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ac_clean_files_save=$ac_clean_files
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@ -13050,6 +13108,8 @@ s,@UNIX_OBJECTLIST@,$UNIX_OBJECTLIST,;t t
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s,@STDIO64_OBJECTLIST@,$STDIO64_OBJECTLIST,;t t
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s,@CC_FOR_BUILD@,$CC_FOR_BUILD,;t t
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s,@libc_cv_initfinit_array@,$libc_cv_initfinit_array,;t t
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s,@HAVE_LONG_DOUBLE_TRUE@,$HAVE_LONG_DOUBLE_TRUE,;t t
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s,@HAVE_LONG_DOUBLE_FALSE@,$HAVE_LONG_DOUBLE_FALSE,;t t
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s,@LIBOBJS@,$LIBOBJS,;t t
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s,@LTLIBOBJS@,$LTLIBOBJS,;t t
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CEOF
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@ -378,8 +378,8 @@ int __start (void) { return 0; }
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int foo (void) { return 1; }
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int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
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EOF
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if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
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-static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
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if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest conftest.c
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1>&AS_MESSAGE_LOG_FD])
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then
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if ${READELF} -S conftest | grep -e INIT_ARRAY > /dev/null; then
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libc_cv_initfinit_array=yes
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@ -395,7 +395,41 @@ if test $libc_cv_initfinit_array = yes; then
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AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY)
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fi
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AC_CACHE_CHECK(long double equals double,
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dnl Autoconf 2.59 doesn't support the AC_TYPE_LONG_DOUBLE macro. Instead of:
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dnl AC_TYPE_LONG_DOUBLE
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dnl AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$ac_cv_type_long_double" = x"yes")
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dnl we specify our own long double test.
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dnl Additionally, ac_cv_objext is broken so that AC_COMPILE_IFELSE cannot be
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dnl used, so use AC_TRY_COMMAND instead.
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AC_CACHE_CHECK(whether long double type exists,
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acnewlib_cv_type_long_double, [dnl
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cat > conftest.c <<EOF
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/* Check two ways: float.h defines and direct type declaration. */
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#include <float.h>
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#if defined(LDBL_MANT_DIG)
|
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#define _HAVE_LONG_DOUBLE
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||||
#else
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||||
#error "LDBL != DBL"
|
||||
#endif
|
||||
long double test() {
|
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long double ld = 0.0L;
|
||||
return ld;
|
||||
}
|
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EOF
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||||
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
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||||
1>&AS_MESSAGE_LOG_FD])
|
||||
then
|
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acnewlib_cv_type_long_double=yes;
|
||||
else
|
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acnewlib_cv_type_long_double=no;
|
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fi
|
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rm -f conftest*])
|
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if test $acnewlib_cv_type_long_double = yes; then
|
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AC_DEFINE_UNQUOTED(_HAVE_LONG_DOUBLE)
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fi
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AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$acnewlib_cv_type_long_double" = x"yes")
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AC_CACHE_CHECK(whether long double equals double,
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newlib_ldbl_eq_dbl, [dnl
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cat > conftest.c <<EOF
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#include <float.h>
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@ -406,8 +440,8 @@ cat > conftest.c <<EOF
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#error "LDBL != DBL"
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#endif
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EOF
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if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
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-static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
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if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
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1>&AS_MESSAGE_LOG_FD])
|
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then
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newlib_ldbl_eq_dbl=yes;
|
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else
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|
@ -8,23 +8,28 @@
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_BEGIN_STD_C
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/* __dmath, __fmath, and __ldmath are only here for backwards compatibility
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* in case any code used them. They are no longer used by Newlib, itself,
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* other than legacy. */
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union __dmath
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{
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__ULong i[2];
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double d;
|
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__ULong i[2];
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};
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union __fmath
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{
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__ULong i[1];
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float f;
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__ULong i[1];
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};
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#if defined(_HAVE_LONG_DOUBLE)
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union __ldmath
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{
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long double ld;
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__ULong i[4];
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_LONG_DOUBLE ld;
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};
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#endif
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/* Natural log of 2 */
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#define _M_LOG2_E 0.693147180559945309417
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@ -57,24 +62,45 @@ union __ldmath
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#else /* !gcc >= 3.3 */
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/* No builtins. Use floating-point unions instead. Declare as an array
|
||||
without bounds so no matter what small data support a port and/or
|
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library has, the reference will be via the general method for accessing
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globals. */
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/* No builtins. Use fixed defines instead. (All 3 HUGE plus the INFINITY
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* and NAN macros are required to be constant expressions. Using a variable--
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* even a static const--does not meet this requirement, as it cannot be
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* evaluated at translation time.)
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* The infinities are done using numbers that are far in excess of
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* something that would be expected to be encountered in a floating-point
|
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* implementation. (A more certain way uses values from float.h, but that is
|
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* avoided because system includes are not supposed to include each other.)
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* This method might produce warnings from some compilers. (It does in
|
||||
* newer GCCs, but not for ones that would hit this #else.) If this happens,
|
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* please report details to the Newlib mailing list. */
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#ifndef HUGE_VAL
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extern __IMPORT const union __dmath __infinity[];
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#define HUGE_VAL (__infinity[0].d)
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#define HUGE_VAL (1.0e999999999)
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||||
#endif
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#ifndef HUGE_VALF
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extern __IMPORT const union __fmath __infinityf[];
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#define HUGE_VALF (__infinityf[0].f)
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#define HUGE_VALF (1.0e999999999F)
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||||
#endif
|
||||
|
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#ifndef HUGE_VALL
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extern __IMPORT const union __ldmath __infinityld[];
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#define HUGE_VALL (__infinityld[0].ld)
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||||
#if !defined(HUGE_VALL) && defined(_HAVE_LONG_DOUBLE)
|
||||
#define HUGE_VALL (1.0e999999999L)
|
||||
#endif
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||||
|
||||
#if !defined(INFINITY)
|
||||
#define INFINITY (HUGE_VALF)
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#endif
|
||||
|
||||
#if !defined(NAN)
|
||||
#if defined(__GNUC__) && defined(__cplusplus)
|
||||
/* Exception: older g++ versions warn about the divide by 0 used in the
|
||||
* normal case (even though older gccs do not). This trick suppresses the
|
||||
* warning, but causes errors for plain gcc, so is only used in the one
|
||||
* special case. */
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||||
static const union { __ULong __i[1]; float __d; } __Nanf = {0x7FC00000};
|
||||
#define NAN (__Nanf.__d)
|
||||
#else
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||||
#define NAN (0.0F/0.0F)
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#endif /* !gcc >= 3.3 */
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||||
|
|
|
|||
|
|
@ -3,38 +3,19 @@
|
|||
*/
|
||||
|
||||
#include <float.h>
|
||||
#include "fdlibm.h"
|
||||
#include <math.h>
|
||||
|
||||
/* These should never actually be used any longer, as their use in math.h was
|
||||
* removed, but they are kept here in case a user was pointing to them.
|
||||
* FIXME: deprecate these identifiers and then delete them. */
|
||||
|
||||
/* Float version of infinity. */
|
||||
const union __fmath __infinityf[1] = {{{0x7f800000}}};
|
||||
const union __fmath __infinityf[1] = { { FLT_MAX+FLT_MAX } };
|
||||
|
||||
/* Double version of infinity. */
|
||||
#ifndef _DOUBLE_IS_32BITS
|
||||
#ifdef __IEEE_BIG_ENDIAN
|
||||
const union __dmath __infinity[1] = {{{0x7ff00000, 0}}};
|
||||
#else
|
||||
const union __dmath __infinity[1] = {{{0, 0x7ff00000}}};
|
||||
#endif
|
||||
#else /* defined (_DOUBLE_IS_32BITS) */
|
||||
const union __dmath __infinity[1] = {{{0x7f800000, 0}}};
|
||||
#endif /* defined (_DOUBLE_IS_32BITS) */
|
||||
const union __dmath __infinity[1] = { { DBL_MAX+DBL_MAX } };
|
||||
|
||||
/* Long double version of infinity. */
|
||||
#ifdef __IEEE_BIG_ENDIAN
|
||||
#if LDBL_MANT_DIG == 24
|
||||
const union __ldmath __infinityld[1] = {{{0x7f800000, 0, 0, 0}}};
|
||||
#elif LDBL_MANT_DIG == 53
|
||||
const union __ldmath __infinityld[1] = {{{0x7ff00000, 0, 0, 0}}};
|
||||
#else
|
||||
const union __ldmath __infinityld[1] = {{{0x7fff0000, 0, 0, 0}}};
|
||||
#endif /* LDBL_MANT_DIG size */
|
||||
#else /* __IEEE_LITTLE_ENDIAN */
|
||||
#if LDBL_MANT_DIG == 24
|
||||
const union __ldmath __infinityld[1] = {{{0x7f800000, 0, 0, 0}}};
|
||||
#elif LDBL_MANT_DIG == 53
|
||||
const union __ldmath __infinityld[1] = {{{0, 0x7ff00000, 0, 0}}};
|
||||
#else
|
||||
const union __ldmath __infinityld[1] = {{{0, 0x80000000, 0x00007fff, 0}}};
|
||||
#endif /* LDBL_MANT_DIG size */
|
||||
#endif /* __IEEE_LITTLE_ENDIAN */
|
||||
|
||||
#if defined(_HAVE_LONG_DOUBLE)
|
||||
const union __ldmath __infinityld[1] = { { LDBL_MAX+LDBL_MAX } };
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -46,6 +46,9 @@
|
|||
functions. */
|
||||
#undef _ATEXIT_DYNAMIC_ALLOC
|
||||
|
||||
/* True if long double supported. */
|
||||
#undef _HAVE_LONG_DOUBLE
|
||||
|
||||
/* True if long double supported and it is equal to double. */
|
||||
#undef _LDBL_EQ_DBL
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue