diff options
| author | burnus <burnus@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-02-15 21:30:43 +0000 |
|---|---|---|
| committer | burnus <burnus@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-02-15 21:30:43 +0000 |
| commit | 9af9660ca689894fe51b696a63bfe81713bd4cd6 (patch) | |
| tree | ea8ca213cedb7992d8e77abb99f171de9ede42aa /libgfortran/acinclude.m4 | |
| parent | 18669cea5ad136747b93554568ba8f5eedd69584 (diff) | |
| download | gcc-9af9660ca689894fe51b696a63bfe81713bd4cd6.tar.gz | |
2011-02-15 Tobias Burnus <burnus@net-b.de>
PR fortran/47716
PR fortran/47648
* acinclude.m4 (LIBGFOR_CHECK_FLOAT128): Use check from
libquadmath, which uses more features.
* configure: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@170200 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libgfortran/acinclude.m4')
| -rw-r--r-- | libgfortran/acinclude.m4 | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4 index 9873d9f2392..1bc1c7bbbfd 100644 --- a/libgfortran/acinclude.m4 +++ b/libgfortran/acinclude.m4 @@ -284,24 +284,33 @@ AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [ AC_CACHE_CHECK([whether we have a usable __float128 type], libgfor_cv_have_float128, [ - AC_TRY_LINK([ -/* no header */ -],[ - typedef _Complex float __attribute__((mode(TC))) __complex128; - - __float128 x; - x = __builtin_huge_valq() - 2.e1000Q; - - __complex128 z1, z2; - z1 = x; - z2 = 2.Q; - - z1 /= z2; - z1 /= 7.Q; -], - libgfor_cv_have_float128=yes, - libgfor_cv_have_float128=no) - ]) + GCC_TRY_COMPILE_OR_LINK([ + typedef _Complex float __attribute__((mode(TC))) __complex128; + + __float128 foo (__float128 x) + { + + __complex128 z1, z2; + + z1 = x; + z2 = x / 7.Q; + z2 /= z1; + + return (__float128) z2; + } + + __float128 bar (__float128 x) + { + return x * __builtin_huge_valq (); + } + ],[ + foo (1.2Q); + bar (1.2Q); + ],[ + libgfor_cv_have_float128=yes + ],[ + libgfor_cv_have_float128=no +])]) if test "x$libgfor_cv_have_float128" = xyes; then AC_DEFINE(HAVE_FLOAT128, 1, [Define if have a usable __float128 type.]) |