1999-12-30 02:11:48 +08:00
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/* Software floating-point emulation.
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Return a / b
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2023-01-07 05:08:04 +08:00
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Copyright (C) 1997-2023 Free Software Foundation, Inc.
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1999-12-30 02:11:48 +08:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 12:58:11 +08:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1999-12-30 02:11:48 +08:00
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2006-04-04 16:25:52 +08:00
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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file into
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combinations with other programs, and to distribute those
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combinations without any restriction coming from the use of this
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file. (The Lesser General Public License restrictions do apply in
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other respects; for example, they cover modification of the file,
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and distribution when not linked into a combine executable.)
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1999-12-30 02:11:48 +08:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 12:58:11 +08:00
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Lesser General Public License for more details.
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1999-12-30 02:11:48 +08:00
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2001-07-06 12:58:11 +08:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-10 07:18:22 +08:00
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License along with the GNU C Library; if not, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 13:40:42 +08:00
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<https://www.gnu.org/licenses/>. */
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1999-12-30 02:11:48 +08:00
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#include "soft-fp.h"
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#include "quad.h"
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2013-10-15 08:17:35 +08:00
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TFtype
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2013-10-16 09:22:21 +08:00
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__divtf3 (TFtype a, TFtype b)
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1999-12-30 02:11:48 +08:00
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{
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FP_DECL_EX;
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2013-10-16 09:22:21 +08:00
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FP_DECL_Q (A);
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FP_DECL_Q (B);
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FP_DECL_Q (R);
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* sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c: Moved to ...
* sysdeps/sparc/dl-procinfo.c: ... here, new file.
* sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.h: Moved to ...
* sysdeps/sparc/dl-procinfo.h: ... here, new file.
(HWCAP_IMPORTANT): Include HWCAP_SPARC_V9 when [__WORDSIZE__ != 64].
* sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c: File removed.
* sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.h: File removed.
2006-02-18 Joseph S. Myers <joseph@codesourcery.com>
* soft-fp/single.h (SFtype): Define.
(union _FP_UNION_S): Use it.
* soft-fp/double.h (DFtype): Define.
(union _FP_UNION_D): Use it.
* soft-fp/extended.h (XFtype): Define.
(union _FP_UNION_E): Use it.
* soft-fp/quad.h (TFtype): Define.
(union _FP_UNION_Q): Use it.
* soft-fp/soft-fp.h: Add _LIBC conditionals.
(SI_BITS, DI_BITS): Define.
* soft-fp/op-common.h (_FP_DECL): Add __attribute__((unused)) for
X##_c.
(_FP_CMP_EQ): Use parentheses for && inside ||.
(_FP_TO_INT): Use statement expressions in conditional controlling
constant shift.
(_FP_FROM_INT): Likewise. Take unsigned type as argument.
* soft-fp/op-2.h (_FP_FRAC_SLL_2, _FP_FRAC_SRL_2, _FP_FRAC_SRST_2,
_FP_FRAC_SRS_2, _FP_FRAC_ASSEMBLE_2): Use statement expressions in
conditional controlling possibly constant shift.
(_FP_FRAC_SRST_2, _FP_FRAC_SRS_2): Avoid left shift by exactly
_FP_W_TYPE_SIZE.
(_FP_FRAC_GT_2, _FP_FRAC_GE_2): Use parentheses for && inside ||.
* soft-fp/op-4.h (_FP_FRAC_SRST_4): Avoid left shift by exactly
_FP_W_TYPE_SIZE.
(__FP_FRAC_ADD_3, __FP_FRAC_ADD_4, __FP_FRAC_SUB_3,
__FP_FRAC_SUB_4): Use _FP_W_TYPE for carry flags.
* soft-fp/op-8.h (_FP_FRAC_SRS_8): Avoid left shift by exactly
_FP_W_TYPE_SIZE.
* soft-fp/floatdidf.c: Pass unsigned type and macro for type size.
* soft-fp/floatdisf.c: Likewise.
* soft-fp/floatditf.c: Likewise.
* soft-fp/floatsidf.c: Likewise.
* soft-fp/floatsisf.c: Likewise.
* soft-fp/floatsitf.c: Likewise.
* soft-fp/floatundidf.c: Likewise.
* soft-fp/floatundisf.c: Likewise.
* soft-fp/floatunditf.c: Likewise.
* soft-fp/floatunsidf.c: Likewise.
* soft-fp/floatunsisf.c: Likewise.
* soft-fp/floatunsitf.c: Likewise.
* soft-fp/fixdfdi.c: Pass macro for type size.
* soft-fp/fixdfsi.c: Likewise.
* soft-fp/fixsfdi.c: Likewise.
* soft-fp/fixsfsi.c: Likewise.
* soft-fp/fixtfdi.c: Likewise.
* soft-fp/fixtfsi.c: Likewise.
* soft-fp/fixunsdfdi.c: Likewise.
* soft-fp/fixunsdfsi.c: Likewise.
* soft-fp/fixunssfdi.c: Likewise.
* soft-fp/fixunssfsi.c: Likewise.
* soft-fp/fixunstfdi.c: Likewise.
* soft-fp/fixunstfsi.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvtqux.c: Pass unsigned type.
* sysdeps/alpha/soft-fp/ots_cvtqx.c: Likewise.
* sysdeps/powerpc/soft-fp/q_itoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_lltoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_ulltoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_utoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_itoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_lltoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_ulltoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_utoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_itoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_uitoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_uxtoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_xtoq.c: Likewise.
* soft-fp/adddf3.c: Use typedefs for argument and return types.
* soft-fp/addsf3.c: Likewise.
* soft-fp/addtf3.c: Likewise.
* soft-fp/divdf3.c: Likewise.
* soft-fp/divsf3.c: Likewise.
* soft-fp/divtf3.c: Likewise.
* soft-fp/eqdf2.c: Likewise.
* soft-fp/eqsf2.c: Likewise.
* soft-fp/eqtf2.c: Likewise.
* soft-fp/extenddftf2.c: Likewise.
* soft-fp/extendsfdf2.c: Likewise.
* soft-fp/extendsftf2.c: Likewise.
* soft-fp/fixdfdi.c: Likewise.
* soft-fp/fixdfsi.c: Likewise.
* soft-fp/fixsfdi.c: Likewise.
* soft-fp/fixsfsi.c: Likewise.
* soft-fp/fixtfdi.c: Likewise.
* soft-fp/fixtfsi.c: Likewise.
* soft-fp/fixunsdfdi.c: Likewise.
* soft-fp/fixunsdfsi.c: Likewise.
* soft-fp/fixunssfdi.c: Likewise.
* soft-fp/fixunssfsi.c: Likewise.
* soft-fp/fixunstfdi.c: Likewise.
* soft-fp/fixunstfsi.c: Likewise.
* soft-fp/floatdidf.c: Likewise.
* soft-fp/floatdisf.c: Likewise.
* soft-fp/floatditf.c: Likewise.
* soft-fp/floatsidf.c: Likewise.
* soft-fp/floatsisf.c: Likewise.
* soft-fp/floatsitf.c: Likewise.
* soft-fp/floatundidf.c: Likewise.
* soft-fp/floatundisf.c: Likewise.
* soft-fp/floatunditf.c: Likewise.
* soft-fp/floatunsidf.c: Likewise.
* soft-fp/floatunsisf.c: Likewise.
* soft-fp/floatunsitf.c: Likewise.
* soft-fp/gedf2.c: Likewise.
* soft-fp/gesf2.c: Likewise.
* soft-fp/getf2.c: Likewise.
* soft-fp/ledf2.c: Likewise.
* soft-fp/lesf2.c: Likewise.
* soft-fp/letf2.c: Likewise.
* soft-fp/muldf3.c: Likewise.
* soft-fp/mulsf3.c: Likewise.
* soft-fp/multf3.c: Likewise.
* soft-fp/negdf2.c: Likewise.
* soft-fp/negsf2.c: Likewise.
* soft-fp/negtf2.c: Likewise.
* soft-fp/sqrtdf2.c: Likewise.
* soft-fp/sqrtsf2.c: Likewise.
* soft-fp/sqrttf2.c: Likewise.
* soft-fp/subdf3.c: Likewise.
* soft-fp/subsf3.c: Likewise.
* soft-fp/subtf3.c: Likewise.
* soft-fp/truncdfsf2.c: Likewise.
* soft-fp/trunctfdf2.c: Likewise.
* soft-fp/trunctfsf2.c: Likewise.
* soft-fp/unorddf2.c: Likewise.
* soft-fp/unordsf2.c: Likewise.
* soft-fp/unordtf2.c: Likewise.
2006-02-09 Joseph S. Myers <joseph@codesourcery.com>
* soft-fp/op-common.h (_FP_UNPACK_SEMIRAW): Define.
(_FP_OVERFLOW_SEMIRAW): Likewise.
(_FP_CHECK_SIGNAN_SEMIRAW): Likewise.
(_FP_CHOOSENAN_SEMIRAW): Likewise.
(_FP_EXP_NORMAL): Likewise.
(_FP_PACK_SEMIRAW): Likewise.
(_FP_ADD_INTERNAL): Rewrite to operate on semi-raw value.
(_FP_SUB): Likewise.
(_FP_TO_INT): Rewrite to operate on raw values. Don't set INVALID
exception for conversions where most negative representable
integer is correct truncated value, but do set INEXACT for such
conversions where appropriate. Don't always left-shift for
converting to a wider integer.
(_FP_FROM_INT): Rewrite to yield raw value. Correct shift for
integers with one more bits than (mantissa + guard) bits for the
floating point format. Don't use __FP_FRAC_SRS_1 for shifting
integers that may be wider than _FP_W_TYPE_SIZE.
(FP_CONV): Don't define.
(FP_EXTEND): Define.
(FP_TRUNC): Likewise.
* soft-fp/op-1.h (_FP_FRAC_SRST_1, __FP_FRAC_SRST_1): Define.
(_FP_FRAC_CONV_1_1): Don't define.
(_FP_FRAC_COPY_1_1): Define.
* soft-fp/op-2.h (_FP_FRAC_SRST_2): Define.
(_FP_FRAC_CONV_1_2, _FP_FRAC_CONV_2_1): Don't define.
(_FP_FRAC_COPY_1_2, _FP_FRAC_COPY_2_1): Define.
* soft-fp/op-4.h (_FP_FRAC_SRST_4): Define.
(_FP_FRAC_SRS_4): Define based on _FP_FRAC_SRST_4.
(_FP_FRAC_CONV_1_4, _FP_FRAC_CONV_2_4): Don't define.
(_FP_FRAC_COPY_1_4, _FP_FRAC_COPY_2_4): Define.
(_FP_FRAC_CONV_4_1, _FP_FRAC_CONV_4_2): Don't define.
(_FP_FRAC_COPY_4_1, _FP_FRAC_COPY_4_2): Define.
* soft-fp/single.h (_FP_FRACTBITS_S): Define.
(_FP_FRACXBITS_S): Define in terms of _FP_FRACXBITS_S.
(_FP_WFRACXBITS_S): Likewise.
(_FP_QNANBIT_SH_S, _FP_IMPLBIT_SH_S): Define.
(FP_UNPACK_SEMIRAW_S, FP_UNPACK_SEMIRAW_SP): Define.
(FP_PACK_SEMIRAW_S, FP_PACK_SEMIRAW_SP): Define.
* soft-fp/double.h (_FP_QNANBIT_SH_D, _FP_IMPLBIT_SH_D): Define.
(FP_UNPACK_SEMIRAW_D, FP_UNPACK_SEMIRAW_D): Define
(FP_PACK_SEMIRAW_D, FP_PACK_SEMIRAW_DP): Define.
* soft-fp/extended.h (_FP_QNANBIT_SH_E, _FP_IMPLBIT_SH_E): Define.
(FP_UNPACK_EP): Correct typo.
(FP_UNPACK_SEMIRAW_E, FP_UNPACK_SEMIRAW_EP): Define.
(FP_PACK_SEMIRAW_E, FP_PACK_SEMIRAW_EP): Define.
* soft-fp/quad.h (_FP_QNANBIT_SH_Q, _FP_IMPLBIT_SH_Q): Define.
(FP_UNPACK_SEMIRAW_Q, FP_UNPACK_SEMIRAW_QP): Define.
(FP_PACK_SEMIRAW_Q, FP_PACK_SEMIRAW_QP): Define.
* soft-fp/fixdfdi.c: Use unsigned type for result of conversion.
* soft-fp/fixdfsi.c: Likewise.
* soft-fp/fixsfdi.c: Likewise.
* soft-fp/fixsfsi.c: Likewise.
* soft-fp/fixtfdi.c: Likewise.
* soft-fp/fixtfsi.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvtxq.c: Likewise.
* sysdeps/alpha/soft-fp/ots_nintxq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtoi.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtoll.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtoi.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtoll.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtoi.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtox.c: Likewise.
* soft-fp/adddf3.c: Update for changed soft-fp interfaces.
* soft-fp/addsf3.c: Likewise.
* soft-fp/addtf3.c: Likewise.
* soft-fp/extenddftf2.c: Likewise.
* soft-fp/extendsfdf2.c: Likewise.
* soft-fp/extendsftf2.c: Likewise.
* soft-fp/fixdfdi.c: Likewise.
* soft-fp/fixdfsi.c: Likewise.
* soft-fp/fixsfdi.c: Likewise.
* soft-fp/fixsfsi.c: Likewise.
* soft-fp/fixtfdi.c: Likewise.
* soft-fp/fixtfsi.c: Likewise.
* soft-fp/fixunsdfdi.c: Likewise.
* soft-fp/fixunsdfsi.c: Likewise.
* soft-fp/fixunssfdi.c: Likewise.
* soft-fp/fixunssfsi.c: Likewise.
* soft-fp/fixunstfdi.c: Likewise.
* soft-fp/fixunstfsi.c: Likewise.
* soft-fp/floatdidf.c: Likewise.
* soft-fp/floatdisf.c: Likewise.
* soft-fp/floatditf.c: Likewise.
* soft-fp/floatsidf.c: Likewise.
* soft-fp/floatsisf.c: Likewise.
* soft-fp/floatsitf.c: Likewise.
* soft-fp/floatundidf.c: Likewise.
* soft-fp/floatundisf.c: Likewise.
* soft-fp/floatunditf.c: Likewise.
* soft-fp/floatunsidf.c: Likewise.
* soft-fp/floatunsisf.c: Likewise.
* soft-fp/floatunsitf.c: Likewise.
* soft-fp/subdf3.c: Likewise.
* soft-fp/subsf3.c: Likewise.
* soft-fp/subtf3.c: Likewise.
* soft-fp/truncdfsf2.c: Likewise.
* soft-fp/trunctfdf2.c: Likewise.
* soft-fp/trunctfsf2.c: Likewise.
* sysdeps/alpha/soft-fp/ots_add.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvtqux.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvtqx.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvttx.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvtxq.c: Likewise.
* sysdeps/alpha/soft-fp/ots_cvtxt.c: Likewise.
* sysdeps/alpha/soft-fp/ots_nintxq.c: Likewise.
* sysdeps/alpha/soft-fp/ots_sub.c: Likewise.
* sysdeps/powerpc/soft-fp/q_add.c: Likewise.
* sysdeps/powerpc/soft-fp/q_dtoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_itoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_lltoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtod.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtoi.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtoll.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtos.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtou.c: Likewise.
* sysdeps/powerpc/soft-fp/q_qtoull.c: Likewise.
* sysdeps/powerpc/soft-fp/q_stoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_sub.c: Likewise.
* sysdeps/powerpc/soft-fp/q_ulltoq.c: Likewise.
* sysdeps/powerpc/soft-fp/q_utoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_add.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_dtoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_itoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_lltoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtod.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtoi.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtoll.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtos.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtou.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_qtoull.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_stoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_sub.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_ulltoq.c: Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_utoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_add.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_dtoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_itoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtod.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtoi.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtos.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtoui.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtoux.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_qtox.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_stoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_sub.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_uitoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_uxtoq.c: Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_xtoq.c: Likewise.
2006-02-25 09:29:59 +08:00
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TFtype r;
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1999-12-30 02:11:48 +08:00
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FP_INIT_ROUNDMODE;
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2013-10-16 09:22:21 +08:00
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FP_UNPACK_Q (A, a);
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FP_UNPACK_Q (B, b);
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FP_DIV_Q (R, A, B);
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FP_PACK_Q (r, R);
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1999-12-30 02:11:48 +08:00
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FP_HANDLE_EXCEPTIONS;
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return r;
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}
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