From: Kito Cheng <kito.cheng@sifive.com>
To: libc-alpha@sourceware.org, joseph@codesourcery.com
Cc: Kito Cheng <kito.cheng@sifive.com>
Subject: [PATCH] soft-fp: Add fixhf[uns][di|si] and float[uns][di|si]hf
Date: Tue, 5 Jul 2022 17:46:31 +0800 [thread overview]
Message-ID: <20220705094631.2162-1-kito.cheng@sifive.com> (raw)
Add more IEEE half conversion routines:
- Convert 32-bit/64-bit integer to IEEE half.
- Convert IEEE half to 32-bit/64-bit integer.
They are required by RISC-V _Float16 support, tested with RISC-V GCC.
---
soft-fp/fixhfdi.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/fixhfsi.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/fixunshfdi.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/fixunshfsi.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/floatdihf.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/floatsihf.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/floatundihf.c | 45 +++++++++++++++++++++++++++++++++++++++++++
soft-fp/floatunsihf.c | 45 +++++++++++++++++++++++++++++++++++++++++++
8 files changed, 360 insertions(+)
create mode 100644 soft-fp/fixhfdi.c
create mode 100644 soft-fp/fixhfsi.c
create mode 100644 soft-fp/fixunshfdi.c
create mode 100644 soft-fp/fixunshfsi.c
create mode 100644 soft-fp/floatdihf.c
create mode 100644 soft-fp/floatsihf.c
create mode 100644 soft-fp/floatundihf.c
create mode 100644 soft-fp/floatunsihf.c
diff --git a/soft-fp/fixhfdi.c b/soft-fp/fixhfdi.c
new file mode 100644
index 0000000000..630a1e3c5f
--- /dev/null
+++ b/soft-fp/fixhfdi.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert a IEEE half to 64bit signed integer
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+DItype
+__fixhfdi (HFtype a)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ UDItype r;
+
+ FP_INIT_EXCEPTIONS;
+ FP_UNPACK_RAW_H (A, a);
+ FP_TO_INT_H (r, A, DI_BITS, 1);
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+}
diff --git a/soft-fp/fixhfsi.c b/soft-fp/fixhfsi.c
new file mode 100644
index 0000000000..4699a75533
--- /dev/null
+++ b/soft-fp/fixhfsi.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert a IEEE half to 32bit signed integer
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+SItype
+__fixhfsi (HFtype a)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ USItype r;
+
+ FP_INIT_EXCEPTIONS;
+ FP_UNPACK_RAW_H (A, a);
+ FP_TO_INT_H (r, A, SI_BITS, 1);
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+}
diff --git a/soft-fp/fixunshfdi.c b/soft-fp/fixunshfdi.c
new file mode 100644
index 0000000000..3ca9c1aee4
--- /dev/null
+++ b/soft-fp/fixunshfdi.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert IEEE half to 64bit unsigned integer
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+UDItype
+__fixunshfdi (HFtype a)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ UDItype r;
+
+ FP_INIT_EXCEPTIONS;
+ FP_UNPACK_RAW_H (A, a);
+ FP_TO_INT_H (r, A, DI_BITS, 0);
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+}
diff --git a/soft-fp/fixunshfsi.c b/soft-fp/fixunshfsi.c
new file mode 100644
index 0000000000..66dd6996ba
--- /dev/null
+++ b/soft-fp/fixunshfsi.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert IEEE half to 32bit unsigned integer
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+USItype
+__fixunshfsi (HFtype a)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ USItype r;
+
+ FP_INIT_EXCEPTIONS;
+ FP_UNPACK_RAW_H (A, a);
+ FP_TO_INT_H (r, A, SI_BITS, 0);
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+}
diff --git a/soft-fp/floatdihf.c b/soft-fp/floatdihf.c
new file mode 100644
index 0000000000..284a516cb9
--- /dev/null
+++ b/soft-fp/floatdihf.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert a 64bit signed integer to IEEE half
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+HFtype
+__floatdihf (DItype i)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ HFtype a;
+
+ FP_INIT_ROUNDMODE;
+ FP_FROM_INT_H (A, i, DI_BITS, UDItype);
+ FP_PACK_RAW_H (a, A);
+ FP_HANDLE_EXCEPTIONS;
+
+ return a;
+}
diff --git a/soft-fp/floatsihf.c b/soft-fp/floatsihf.c
new file mode 100644
index 0000000000..2caa11d99c
--- /dev/null
+++ b/soft-fp/floatsihf.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert a 32bit signed integer to IEEE half
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+HFtype
+__floatsihf (SItype i)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ HFtype a;
+
+ FP_INIT_ROUNDMODE;
+ FP_FROM_INT_H (A, i, SI_BITS, USItype);
+ FP_PACK_RAW_H (a, A);
+ FP_HANDLE_EXCEPTIONS;
+
+ return a;
+}
diff --git a/soft-fp/floatundihf.c b/soft-fp/floatundihf.c
new file mode 100644
index 0000000000..f325a8099e
--- /dev/null
+++ b/soft-fp/floatundihf.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert a 64bit unsigned integer to IEEE half.
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+HFtype
+__floatundihf (UDItype i)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ HFtype a;
+
+ FP_INIT_ROUNDMODE;
+ FP_FROM_INT_H (A, i, DI_BITS, UDItype);
+ FP_PACK_RAW_H (a, A);
+ FP_HANDLE_EXCEPTIONS;
+
+ return a;
+}
diff --git a/soft-fp/floatunsihf.c b/soft-fp/floatunsihf.c
new file mode 100644
index 0000000000..8d690a038f
--- /dev/null
+++ b/soft-fp/floatunsihf.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+ Convert a 32bit unsigned integer to IEEE half.
+ Copyright (C) 2022 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "half.h"
+
+HFtype
+__floatunsihf (USItype i)
+{
+ FP_DECL_EX;
+ FP_DECL_H (A);
+ HFtype a;
+
+ FP_INIT_ROUNDMODE;
+ FP_FROM_INT_H (A, i, SI_BITS, USItype);
+ FP_PACK_RAW_H (a, A);
+ FP_HANDLE_EXCEPTIONS;
+
+ return a;
+}
--
2.34.0
next reply other threads:[~2022-07-05 9:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 9:46 Kito Cheng [this message]
2022-07-19 20:59 ` Joseph Myers
2022-07-21 8:55 ` Kito Cheng
2022-07-21 11:34 ` Adhemerval Zanella Netto
2022-08-08 7:29 ` Kito Cheng
2022-08-08 13:13 ` Adhemerval Zanella Netto
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