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| author | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-02-07 14:07:01 -0600 |
|---|---|---|
| committer | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-02-21 08:24:36 -0600 |
| commit | a92ac9f494b2a7d59a1f54ba79c569a35a6da005 (patch) | |
| tree | e32c49c2f71a90e66a9f75647e846ba6d8b47775 /sysdeps/ieee754/ldbl-128ibm-compat/math_ldbl.h | |
| parent | bb05281822d406afdf5fa0457a91f77a5f5260f1 (diff) | |
| download | glibc-a92ac9f494b2a7d59a1f54ba79c569a35a6da005.tar.gz | |
ldbl-128ibm: make ieee754.h work with IEEE 128 long double
Instead of attempting something more creative, just copy
the small struct from ldbl-128 and enable it when IEEE
long double is present, and update the ibm long double
variant if supported.
Likewise, provide a shadow copy of math_ldbl.h to prevent
the ibm128 specific long double header from poisoning
unrelated files due to it's usage in math_private.h.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm-compat/math_ldbl.h')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm-compat/math_ldbl.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/math_ldbl.h b/sysdeps/ieee754/ldbl-128ibm-compat/math_ldbl.h new file mode 100644 index 0000000000..352617e178 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128ibm-compat/math_ldbl.h @@ -0,0 +1,30 @@ +/* Manipulation of the bit representation of 'long double' quantities. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef _MATH_LDBL_H_IBM128_COMPAT +#define _MATH_LDBL_H_IBM128_COMPAT 1 + +#include <bits/floatn.h> + +/* Trampoline in the ldbl-128ibm headers if building against the + old abi. Otherwise, we have nothing to add. */ +#if __LONG_DOUBLE_USES_FLOAT128 == 0 +#include_next <math_ldbl.h> +#endif + +#endif /* _MATH_LDBL_H_IBM128_COMPAT */ |