From: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
To: libc-alpha@sourceware.org
Cc: joseph@codesourcery.com, gabriel@inconstante.eti.br, raji@linux.ibm.com
Subject: [PATCH 4/9] ldbl-128ibm-compat: Add a generic significand() implementation
Date: Wed, 06 Jun 2018 22:41:00 -0000 [thread overview]
Message-ID: <20180606223909.16675-5-tuliom@linux.ibm.com> (raw)
In-Reply-To: <20180606223909.16675-1-tuliom@linux.ibm.com>
Create a template for significand and reuse it in the ldbl-128ibm-compat directory.
2018-06-06 Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
* math/s_significand_template.c: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/Versions: Add
__significandieee128.
* sysdeps/ieee754/ldbl-128ibm-compat/s_significandf128.c: New file.
* sysdeps/ieee754/ldbl-128ibm-compat/s_significandl.c: New file.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
---
math/s_significand_template.c | 33 ++++++++++++++++++++++
sysdeps/ieee754/ldbl-128ibm-compat/Versions | 1 +
.../ieee754/ldbl-128ibm-compat/s_significandf128.c | 25 ++++++++++++++++
3 files changed, 59 insertions(+)
create mode 100644 math/s_significand_template.c
create mode 100644 sysdeps/ieee754/ldbl-128ibm-compat/s_significandf128.c
diff --git a/math/s_significand_template.c b/math/s_significand_template.c
new file mode 100644
index 0000000000..c95017e683
--- /dev/null
+++ b/math/s_significand_template.c
@@ -0,0 +1,33 @@
+/* Return the mantissa of a floating-point number.
+ Copyright (C) 2018 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
+ <http://www.gnu.org/licenses/>. */
+
+/*
+ * significand(x) computes just
+ * scalb(x, (long double) - ilogb(x)),
+ * for exercising the fraction-part(F) IEEE 754-1985 test vector.
+ */
+
+#include <math.h>
+#include <math_private.h>
+
+FLOAT
+M_DECL_FUNC (__significand) (FLOAT x)
+{
+ return M_SUF (__ieee754_scalb) (x,(FLOAT) - M_SUF (__ilogb) (x));
+}
+declare_mgen_alias (__significand, significand)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Versions b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
index 8133d874df..06c19569c5 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Versions
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
@@ -110,6 +110,7 @@ libm {
__scalbnieee128;
__setpayloadieee128;
__setpayloadsigieee128;
+ __significandieee128;
__sincosieee128;
__sinhieee128;
__sinieee128;
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/s_significandf128.c b/sysdeps/ieee754/ldbl-128ibm-compat/s_significandf128.c
new file mode 100644
index 0000000000..4ae0fde6a5
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/s_significandf128.c
@@ -0,0 +1,25 @@
+/* Get mantissa of long double.
+ Copyright (C) 2018 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <float128_private.h>
+#include <math-type-macros-float128.h>
+
+#define __significandf128 __significandieee128
+#undef declare_mgen_alias
+#define declare_mgen_alias(...)
+#include <math/s_significand_template.c>
--
2.14.4
next prev parent reply other threads:[~2018-06-06 22:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-06 22:41 [PATCH 0/9] Introduce ieee128 symbols and redirections Tulio Magno Quites Machado Filho
2018-06-06 22:41 ` [PATCH 1/9] ldbl-128ibm-compat: Create libm-alias-float128.h Tulio Magno Quites Machado Filho
2018-06-06 23:05 ` Joseph Myers
2018-06-13 20:16 ` Tulio Magno Quites Machado Filho
2018-06-06 22:41 ` Tulio Magno Quites Machado Filho [this message]
2018-06-07 13:38 ` [PATCH 4/9] ldbl-128ibm-compat: Add a generic significand() implementation Joseph Myers
2018-06-15 20:16 ` Tulio Magno Quites Machado Filho
2018-06-15 20:20 ` Tulio Magno Quites Machado Filho
2018-06-06 22:41 ` [PATCH 3/9] ldbl-128ibm-compat: Provide a generic scalb implementation Tulio Magno Quites Machado Filho
2018-06-06 22:41 ` [PATCH 2/9] Move declare_mgen_finite_alias definition Tulio Magno Quites Machado Filho
2018-06-07 13:25 ` Joseph Myers
2018-06-06 22:42 ` [PATCH 7/9] Refactor math-finite.h and introduce mathcalls-redir.h Tulio Magno Quites Machado Filho
2018-06-06 23:23 ` Joseph Myers
2018-06-13 21:36 ` Tulio Magno Quites Machado Filho
2018-06-13 22:58 ` Joseph Myers
2018-06-14 18:07 ` Tulio Magno Quites Machado Filho
2018-06-06 22:42 ` [PATCH 6/9] ldbl-128ibm-compat: Provide nexttoward functions Tulio Magno Quites Machado Filho
2018-06-06 22:42 ` [PATCH 5/9] ldbl-128ibm-compat: Provide ISO C functions not provided by the _Float128 API Tulio Magno Quites Machado Filho
2018-06-07 14:51 ` Joseph Myers
2018-06-13 21:41 ` Tulio Magno Quites Machado Filho
2018-06-06 22:42 ` [PATCH 8/9] ldbl-128ibm-compat: Redirect long double functions to f128/ieee128 functions Tulio Magno Quites Machado Filho
2018-06-06 22:43 ` [PATCH 9/9] ldbl-128ibm-compat: Redirect complex math functions Tulio Magno Quites Machado Filho
2018-06-06 23:11 ` [PATCH 0/9] Introduce ieee128 symbols and redirections Joseph Myers
2018-06-13 20:25 ` Tulio Magno Quites Machado Filho
2018-06-13 20:28 ` Joseph Myers
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