67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/****************************************************************************
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* libs/libc/signal/sig_xorset.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <signal.h>
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#include <errno.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxsig_xorset
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*
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* Description:
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* This function returns the xor of right and left in dest.
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*
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* Input Parameters:
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* dest - Location to store the union
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* left, right - The two sets to use in the union
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*
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* Returned Value:
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* This is an internal OS interface and should not be used by applications.
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* It follows the NuttX internal error return policy: Zero (OK) is
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* returned on success. A negated errno value is returned on failure.
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*
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* 0 on successor or -1 on failure
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*
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* Assumptions:
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*
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****************************************************************************/
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int nxsig_xorset(FAR sigset_t *dest, FAR const sigset_t *left,
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FAR const sigset_t *right)
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{
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int ndx;
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/* Add the signal sets */
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for (ndx = 0; ndx < _SIGSET_NELEM; ndx++)
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{
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dest->_elem[ndx] = left->_elem[ndx] ^ right->_elem[ndx];
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}
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return OK;
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}
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