* lib/math.in.h (setpayloadsigl): New declaration.
* lib/setpayloadsigl.c: New file, based on lib/setpayloadl.c.
* m4/math_h.m4 (gl_MATH_H): Test whether setpayloadsigl is declared.
(gl_MATH_H_REQUIRE_DEFAULTS): Initialize GNULIB_SETPAYLOADSIGL.
(gl_MATH_H_DEFAULTS): Initialize HAVE_SETPAYLOADSIGL.
* modules/math (Makefile.am): Substitute GNULIB_SETPAYLOADSIGL,
HAVE_SETPAYLOADSIGL.
* modules/setpayloadsigl: New file.
* doc/posix-functions/setpayloadsigl.texi: Mention the new module.
+2024-04-16 Bruno Haible <bruno@clisp.org>
+
+ setpayloadsigl: New module.
+ * lib/math.in.h (setpayloadsigl): New declaration.
+ * lib/setpayloadsigl.c: New file, based on lib/setpayloadl.c.
+ * m4/math_h.m4 (gl_MATH_H): Test whether setpayloadsigl is declared.
+ (gl_MATH_H_REQUIRE_DEFAULTS): Initialize GNULIB_SETPAYLOADSIGL.
+ (gl_MATH_H_DEFAULTS): Initialize HAVE_SETPAYLOADSIGL.
+ * modules/math (Makefile.am): Substitute GNULIB_SETPAYLOADSIGL,
+ HAVE_SETPAYLOADSIGL.
+ * modules/setpayloadsigl: New file.
+ * doc/posix-functions/setpayloadsigl.texi: Mention the new module.
+
2024-04-16 Bruno Haible <bruno@clisp.org>
setpayloadsigf: Add tests.
@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
@end ifnotinfo
-Gnulib module: ---
+Gnulib module: setpayloadsigl
Portability problems fixed by Gnulib:
@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, macOS 11.1, FreeBSD 14.0, NetBSD 10.0, OpenBSD 6.7, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, Solaris 11.4, Cygwin 2.9, mingw, MSVC 14, Android 9.0.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
-@item
-This function is missing on all non-glibc platforms:
-glibc 2.24, macOS 11.1, FreeBSD 14.0, NetBSD 10.0, OpenBSD 6.7, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, Solaris 11.4, Cygwin 2.9, mingw, MSVC 14, Android 9.0.
@end itemize
# endif
#endif
+#if @GNULIB_SETPAYLOADSIGL@
+# if !@HAVE_SETPAYLOADSIGL@
+_GL_FUNCDECL_SYS (setpayloadsigl, int, (long double *, long double));
+# endif
+_GL_CXXALIAS_SYS (setpayloadsigl, int, (long double *, long double));
+_GL_CXXALIASWARN (setpayloadsigl);
+#elif defined GNULIB_POSIXCHECK
+# undef setpayloadsigl
+# if HAVE_RAW_DECL_SETPAYLOADSIGL
+_GL_WARN_ON_USE (setpayloadsigl, "setpayloadsigl is unportable - "
+ "use gnulib module setpayloadsigl for portability");
+# endif
+#endif
+
#if @GNULIB_TOTALORDERF@
# if @REPLACE_TOTALORDERF@
--- /dev/null
+/* Construct a signalling NaN 'long double' with a given payload.
+ Copyright 2024 Free Software Foundation, Inc.
+
+ This file 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 3 of the
+ License, or (at your option) any later version.
+
+ This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible. */
+
+#include <config.h>
+
+/* Specification. */
+#include <math.h>
+
+#if HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+
+int
+setpayloadsigl (long double *result, long double payload)
+{
+ return setpayloadsig ((double *) result, payload);
+}
+
+#else
+
+# include <float.h>
+# include <stdint.h>
+
+# include "signed-snan.h"
+
+/* 2^(LDBL_MANT_DIG-1). */
+# define TWO_LDBL_MANT_DIG \
+ ((long double) (1U << ((LDBL_MANT_DIG - 1) / 4)) \
+ * (long double) (1U << ((LDBL_MANT_DIG - 1 + 1) / 4)) \
+ * (long double) (1U << ((LDBL_MANT_DIG - 1 + 2) / 4)) \
+ * (long double) (1U << ((LDBL_MANT_DIG - 1 + 3) / 4)))
+
+int
+setpayloadsigl (long double *result, long double payload)
+{
+# if (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 106 || LDBL_MANT_DIG == 113) \
+ && defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
+ if (
+# if defined __hppa || defined __mips__ || defined __sh__
+ payload >= 0.0L
+# else
+ /* A zero payload is not allowed, because that would denote Infinity.
+ Cf. snan.h. */
+ payload > 0.0L
+# endif
+# if LDBL_MANT_DIG == 64 /* on i386, x86_64, ia64, m68k */
+ && payload < 4611686018427387904.0L /* exp2l (LDBL_MANT_DIG - 2) */
+ && payload == (long double) (int64_t) payload
+# endif
+# if LDBL_MANT_DIG == 106 /* on powerpc, powerpc64, powerpc64le */
+ && payload < 2251799813685248.0L /* exp2l (DBL_MANT_DIG - 2) */
+ && payload == (long double) (int64_t) payload
+# endif
+# if LDBL_MANT_DIG == 113 /* on alpha, arm64, loongarch64, mips64, riscv64, s390x, sparc64 */
+ && payload < 2596148429267413814265248164610048.0L /* exp2l (LDBL_MANT_DIG - 2) */
+ && payload == +(+(payload + TWO_LDBL_MANT_DIG) - TWO_LDBL_MANT_DIG)
+# endif
+ )
+ {
+ memory_long_double x = memory_positive_SNaNl ();
+
+# if LDBL_MANT_DIG == 64 /* on i386, x86_64, ia64, m68k */
+ uint64_t pl = (int64_t) payload;
+# if LDBL_EXPBIT0_WORD == 2 && LDBL_EXPBIT0_BIT == 0 /* on i386, x86_64, ia64 */
+ x.word[1] = (x.word[1] & 0xC0000000U) | (uint32_t) (pl >> 32);
+ x.word[0] = (uint32_t) pl;
+# elif LDBL_EXPBIT0_WORD == 0 && LDBL_EXPBIT0_BIT == 16 /* on m68k */
+ x.word[1] = (x.word[1] & 0xC0000000U) | (uint32_t) (pl >> 32);
+ x.word[2] = (uint32_t) pl;
+# else
+# error "Please port gnulib setpayloadsigl.c to your platform!"
+# endif
+# endif
+# if LDBL_MANT_DIG == 106 /* on powerpc, powerpc64, powerpc64le */
+ uint64_t pl = (int64_t) payload;
+# if LDBL_EXPBIT0_BIT == 20
+ uint32_t pl_hi = (uint32_t) (pl >> 32);
+ uint32_t pl_lo = (uint32_t) pl;
+ x.word[LDBL_EXPBIT0_WORD] = (x.word[LDBL_EXPBIT0_WORD] & 0xFFF80000U)
+ | pl_hi;
+ x.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 1 : -1)] = pl_lo;
+# else
+# error "Please port gnulib setpayloadsigl.c to your platform!"
+# endif
+# endif
+# if LDBL_MANT_DIG == 113 /* on alpha, arm64, loongarch64, mips64, riscv64, s390x, sparc64 */
+# if LDBL_EXPBIT0_BIT == 16
+ memory_long_double pl;
+ pl.value = payload + TWO_LDBL_MANT_DIG;
+ x.word[LDBL_EXPBIT0_WORD] = (x.word[LDBL_EXPBIT0_WORD] & 0xFFFF8000U)
+ | (pl.word[LDBL_EXPBIT0_WORD] & 0x00007FFFU);
+ x.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 1 : -1)] =
+ pl.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 1 : -1)];
+ x.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 2 : -2)] =
+ pl.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 2 : -2)];
+ x.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 3 : -3)] =
+ pl.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD == 0 ? 3 : -3)];
+# else
+# error "Please port gnulib setpayloadsigl.c to your platform!"
+# endif
+# endif
+
+ *result = x.value;
+ return 0;
+ }
+ else
+ {
+ *result = 0.0L;
+ return -1;
+ }
+# else
+# error "Please port gnulib setpayloadsigl.c to your platform!"
+# endif
+}
+
+#endif
# math_h.m4
-# serial 131
+# serial 132
dnl Copyright (C) 2007-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
remainder remainderf remainderl
rint rintf rintl round roundf roundl
setpayload setpayloadf setpayloadl
- setpayloadsig setpayloadsigf
+ setpayloadsig setpayloadsigf setpayloadsigl
sinf sinl sinhf sqrtf sqrtl
tanf tanl tanhf totalorder totalorderf totalorderl trunc truncf truncl])
])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETPAYLOADL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETPAYLOADSIG])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETPAYLOADSIGF])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETPAYLOADSIGL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGNBIT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SINF])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SINL])
HAVE_SETPAYLOADL=1; AC_SUBST([HAVE_SETPAYLOADL])
HAVE_SETPAYLOADSIG=1; AC_SUBST([HAVE_SETPAYLOADSIG])
HAVE_SETPAYLOADSIGF=1; AC_SUBST([HAVE_SETPAYLOADSIGF])
+ HAVE_SETPAYLOADSIGL=1; AC_SUBST([HAVE_SETPAYLOADSIGL])
HAVE_SINF=1; AC_SUBST([HAVE_SINF])
HAVE_SINL=1; AC_SUBST([HAVE_SINL])
HAVE_SINHF=1; AC_SUBST([HAVE_SINHF])
-e 's/@''GNULIB_SETPAYLOADL''@/$(GNULIB_SETPAYLOADL)/g' \
-e 's/@''GNULIB_SETPAYLOADSIG''@/$(GNULIB_SETPAYLOADSIG)/g' \
-e 's/@''GNULIB_SETPAYLOADSIGF''@/$(GNULIB_SETPAYLOADSIGF)/g' \
+ -e 's/@''GNULIB_SETPAYLOADSIGL''@/$(GNULIB_SETPAYLOADSIGL)/g' \
-e 's/@''GNULIB_SIGNBIT''@/$(GNULIB_SIGNBIT)/g' \
-e 's/@''GNULIB_SINF''@/$(GNULIB_SINF)/g' \
-e 's/@''GNULIB_SINL''@/$(GNULIB_SINL)/g' \
-e 's|@''HAVE_SETPAYLOADL''@|$(HAVE_SETPAYLOADL)|g' \
-e 's|@''HAVE_SETPAYLOADSIG''@|$(HAVE_SETPAYLOADSIG)|g' \
-e 's|@''HAVE_SETPAYLOADSIGF''@|$(HAVE_SETPAYLOADSIGF)|g' \
+ -e 's|@''HAVE_SETPAYLOADSIGL''@|$(HAVE_SETPAYLOADSIGL)|g' \
-e 's|@''HAVE_SINF''@|$(HAVE_SINF)|g' \
-e 's|@''HAVE_SINL''@|$(HAVE_SINL)|g' \
-e 's|@''HAVE_SINHF''@|$(HAVE_SINHF)|g' \
--- /dev/null
+Description:
+setpayloadsigl function: construct a signalling NaN with a given payload
+
+Files:
+lib/setpayloadsigl.c
+m4/mathfunc.m4
+m4/setpayloadsig.m4
+m4/exponentl.m4
+
+Depends-on:
+math
+extensions
+setpayloadsig [test $HAVE_SETPAYLOADSIGL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1]
+float [test $HAVE_SETPAYLOADSIGL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
+stdint [test $HAVE_SETPAYLOADSIGL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
+signed-snan [test $HAVE_SETPAYLOADSIGL = 0 && test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
+
+configure.ac:
+gl_FUNC_SETPAYLOADSIGL
+gl_CONDITIONAL([GL_COND_OBJ_SETPAYLOADSIGL], [test $HAVE_SETPAYLOADSIGL = 0])
+gl_MATH_MODULE_INDICATOR([setpayloadsigl])
+
+Makefile.am:
+if GL_COND_OBJ_SETPAYLOADSIGL
+lib_SOURCES += setpayloadsigl.c
+endif
+
+Include:
+<math.h>
+
+Link:
+$(SETPAYLOADSIGL_LIBM)
+
+License:
+LGPL
+
+Maintainer:
+all