Add sigandset(3), sigisemptyset(3), signotset(3), and sigorset(3).

libc/Makefile

@@ -32,10 +32,14 @@ inttypes/strtoumax.o \
 inttypes/wcstoimax.o \
 inttypes/wcstoumax.o \
 signal/sigaddset.o \
+signal/sigandset.o \
 signal/sigdelset.o \
 signal/sigemptyset.o \
 signal/sigfillset.o \
+signal/sigisemptyset.o \
 signal/sigismember.o \
+signal/signotset.o \
+signal/sigorset.o \
 stdio/clearerr.o \
 stdio/dprintf.o \
 stdio/fbufsize.o \

libc/include/signal.h

@@ -176,14 +176,18 @@ int raise(int sig);
 int sigaction(int, const struct sigaction* __restrict, struct sigaction* __restrict);
 int sigaddset(sigset_t*, int);
 int sigaltstack(const stack_t* __restrict, stack_t* __restrict);
+int sigandset(sigset_t*, const sigset_t*, const sigset_t*);
 int sigdelset(sigset_t*, int);
 int sigemptyset(sigset_t*);
 int sigfillset(sigset_t*);
 /* TODO: sighold (obsolescent XSI). */
 /* TODO: sigignore (obsolescent XSI). */
 /* TODO: siginterrupt (obsolescent XSI). */
+int sigisemptyset(const sigset_t*);
 int sigismember(const sigset_t*, int);
 sighandler_t signal(int, sighandler_t);
+int signotset(sigset_t*, const sigset_t*);
+int sigorset(sigset_t*, const sigset_t*, const sigset_t*);
 /* TODO: sigpause (obsolescent XSI). */
 int sigpending(sigset_t*);
 int sigprocmask(int, const sigset_t* __restrict, sigset_t* __restrict);

libc/signal/sigandset.cpp

@@ -0,0 +1,34 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix 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 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    signal/sigandset.cpp
+    Computes the intersection of two signal sets.
+
+*******************************************************************************/
+
+#include <stdint.h>
+#include <signal.h>
+
+extern "C"
+int sigandset(sigset_t* set, const sigset_t* left, const sigset_t* right)
+{
+	for ( size_t i = 0; i < sizeof(set->__val) / sizeof(set->__val[0]); i++ )
+		set->__val[i] = left->__val[i] & right->__val[i];
+	return 0;
+}

libc/signal/sigisemptyset.cpp

@@ -0,0 +1,34 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix 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 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    signal/sigisemptyset.cpp
+    Tests whether this is the empty signal set.
+
+*******************************************************************************/
+
+#include <stdint.h>
+#include <signal.h>
+
+extern "C" int sigisemptyset(const sigset_t* set)
+{
+	for ( size_t i = 0; i < sizeof(set->__val) / sizeof(set->__val[0]); i++ )
+		if ( set->__val[i] != 0 )
+			return 1;
+	return 0;
+}

libc/signal/signotset.cpp

@@ -0,0 +1,34 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix 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 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    signal/signotset.cpp
+    Computes the complement of a signal set.
+
+*******************************************************************************/
+
+#include <stdint.h>
+#include <signal.h>
+
+extern "C"
+int signotset(sigset_t* dst, const sigset_t* src)
+{
+	for ( size_t i = 0; i < sizeof(dst->__val) / sizeof(dst->__val[0]); i++ )
+		dst->__val[i] = ~src->__val[i];
+	return 0;
+}

libc/signal/sigorset.cpp

@@ -0,0 +1,34 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix 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 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    signal/sigorset.cpp
+    Computes the union of two signal sets.
+
+*******************************************************************************/
+
+#include <stdint.h>
+#include <signal.h>
+
+extern "C"
+int sigorset(sigset_t* set, const sigset_t* left, const sigset_t* right)
+{
+	for ( size_t i = 0; i < sizeof(set->__val) / sizeof(set->__val[0]); i++ )
+		set->__val[i] = left->__val[i] | right->__val[i];
+	return 0;
+}