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feature tests: signbit detection fix for ia64

An Intel Itanium fix from OpenSUSE:
https://build.opensuse.org/package/view_file/shells/ksh/ksh93-ia64.dif
This commit is contained in:
Martijn Dekker 2021-02-02 04:40:09 +00:00
parent 7a6980a380
commit 0684806d47
2 changed files with 22 additions and 0 deletions

View file

@ -135,6 +135,18 @@ echo "#include <math.h>"
case $_hdr_ieeefp in
1) echo "#include <ieeefp.h>" ;;
esac
cat <<!
#if defined(__ia64__) && defined(signbit)
# if defined __GNUC__ && __GNUC__ >= 4
# define __signbitl(f) __builtin_signbitl(f)
# else
# include <ast_float.h>
# if _lib_copysignl
# define __signbitl(f) (int)(copysignl(1.0,(f))<0.0)
# endif
# endif
#endif
!
echo
: generate the intercept functions and table entries

View file

@ -55,6 +55,16 @@ static char *Zero = "0";
#endif
#endif
#if defined(__ia64__) && defined(signbit)
# if defined __GNUC__ && __GNUC__ >= 4
# define __signbitl(f) __builtin_signbitl(f)
# else
# if _lib_copysignl
# define __signbitl(f) (int)(copysignl(1.0,(f))<0.0)
# endif
# endif
#endif
#if !_lib_signbit
#if !_ast_fltmax_double
static int neg0ld(Sfdouble_t f)