1 /********************************************************************** 2 Copyright(c) 2011-2018 Intel Corporation All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions 6 are met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above copyright 10 notice, this list of conditions and the following disclaimer in 11 the documentation and/or other materials provided with the 12 distribution. 13 * Neither the name of Intel Corporation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 **********************************************************************/ 29 30 #include <stddef.h> 31 32 /** 33 * @file mem_routines.h 34 * @brief Interface to storage mem operations 35 * 36 * Defines the interface for vector versions of common memory functions. 37 */ 38 39 #ifndef _MEM_ROUTINES_H_ 40 #define _MEM_ROUTINES_H_ 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 /** 47 * @brief Detect if a memory region is all zero 48 * 49 * Zero detect function with optimizations for large blocks > 128 bytes 50 * 51 * @param mem Pointer to memory region to test 52 * @param len Length of region in bytes 53 * @returns 0 - region is all zeros 54 * other - region has non zero bytes 55 */ 56 int 57 isal_zero_detect(void *mem, size_t len); 58 59 #ifdef __cplusplus 60 } 61 #endif 62 63 #endif // _MEM_ROUTINES_H_ 64