libosmocore
0.9.3
Osmocom core library
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00001 /* 00002 * bit64gen.h 00003 * 00004 * Copyright (C) 2014 Max <max.suraev@fairwaves.co> 00005 * 00006 * All Rights Reserved 00007 * 00008 * This program is free software; you can redistribute it and/or modify 00009 * it under the terms of the GNU General Public License as published by 00010 * the Free Software Foundation; either version 2 of the License, or 00011 * (at your option) any later version. 00012 * 00013 * This program is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00016 * GNU General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU General Public License along 00019 * with this program; if not, write to the Free Software Foundation, Inc., 00020 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 00021 */ 00022 00023 #pragma once 00024 00030 static inline uint64_t osmo_load64le_ext(const void *p, uint8_t n) 00031 { 00032 uint8_t i; 00033 uint64_t r = 0; 00034 const uint8_t *q = (uint8_t *)p; 00035 for(i = 0; i < n; r |= ((uint64_t)q[i] << (8 * i)), i++); 00036 return r; 00037 } 00038 00044 static inline uint64_t osmo_load64be_ext(const void *p, uint8_t n) 00045 { 00046 uint8_t i; 00047 uint64_t r = 0; 00048 const uint8_t *q = (uint8_t *)p; 00049 for(i = 0; i < n; r |= ((uint64_t)q[i] << (64 - 8* (1 + i))), i++); 00050 return r; 00051 } 00052 00053 00059 static inline void osmo_store64le_ext(uint64_t x, void *p, uint8_t n) 00060 { 00061 uint8_t i; 00062 uint8_t *q = (uint8_t *)p; 00063 for(i = 0; i < n; q[i] = (x >> i * 8) & 0xFF, i++); 00064 } 00065 00071 static inline void osmo_store64be_ext(uint64_t x, void *p, uint8_t n) 00072 { 00073 uint8_t i; 00074 uint8_t *q = (uint8_t *)p; 00075 for(i = 0; i < n; q[i] = (x >> ((n - 1 - i) * 8)) & 0xFF, i++); 00076 } 00077 00078 00079 /* Convenience function for most-used cases */ 00080 00081 00083 static inline uint64_t osmo_load64le(const void *p) 00084 { 00085 return osmo_load64le_ext(p, 64 / 8); 00086 } 00087 00089 static inline uint64_t osmo_load64be(const void *p) 00090 { 00091 return osmo_load64be_ext(p, 64 / 8); 00092 } 00093 00094 00096 static inline void osmo_store64le(uint64_t x, void *p) 00097 { 00098 osmo_store64le_ext(x, p, 64 / 8); 00099 } 00100 00102 static inline void osmo_store64be(uint64_t x, void *p) 00103 { 00104 osmo_store64be_ext(x, p, 64 / 8); 00105 }