mbed library sources. Supersedes mbed-src.
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targets/TARGET_NUVOTON/nu_bitutil.h
- Committer:
- fwndz
- Date:
- 2016-12-21
- Revision:
- 153:da99e106a1c2
- Parent:
- 149:156823d33999
File content as of revision 153:da99e106a1c2:
/* mbed Microcontroller Library * Copyright (c) 2015-2016 Nuvoton * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef NU_BIT_UTIL_H #define NU_BIT_UTIL_H #include "cmsis.h" #ifdef __cplusplus extern "C" { #endif __STATIC_INLINE int nu_clz(uint32_t x) { return __CLZ(x); } __STATIC_INLINE int nu_clo(uint32_t x) { return nu_clz(~x); } __STATIC_INLINE int nu_ctz(uint32_t x) { int c = __CLZ(x & -x); return x ? 31 - c : c; } __STATIC_INLINE int nu_cto(uint32_t x) { return nu_ctz(~x); } __STATIC_INLINE uint16_t nu_get16_le(const uint8_t *pos) { uint16_t val; val = *pos ++; val += (*pos << 8); return val; } __STATIC_INLINE void nu_set16_le(uint8_t *pos, uint16_t val) { *pos ++ = val & 0xFF; *pos = val >> 8; } __STATIC_INLINE uint32_t nu_get32_le(const uint8_t *pos) { uint32_t val; val = *pos ++; val += (*pos ++ << 8); val += (*pos ++ << 16); val += (*pos ++ << 24); return val; } __STATIC_INLINE void nu_set32_le(uint8_t *pos, uint32_t val) { *pos ++ = val & 0xFF; *pos ++ = (val >> 8) & 0xFF; *pos ++ = (val >> 16) & 0xFF; *pos = (val >> 24) & 0xFF; } __STATIC_INLINE uint16_t nu_get16_be(const uint8_t *pos) { uint16_t val; val = *pos ++; val <<= 8; val += *pos; return val; } __STATIC_INLINE void nu_set16_be(uint8_t *pos, uint16_t val) { *pos ++ = val >> 8; *pos = (val & 0xFF); } __STATIC_INLINE uint32_t nu_get32_be(const uint8_t *pos) { uint32_t val; val = *pos ++; val <<= 8; val += *pos ++; val <<= 8; val += *pos ++; val <<= 8; val += *pos; return val; } __STATIC_INLINE void nu_set32_be(uint8_t *pos, uint32_t val) { *pos ++ = val >> 24; *pos ++ = val >> 16; *pos ++ = val >> 8; *pos ++ = (val & 0xFF); } #ifdef __cplusplus } #endif #endif