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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_NUMAKER_PFM_M453/TARGET_NUVOTON/nu_bitutil.h@169:a7c7b631e539, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 15:38:59 2018 +0100
Revision:
169:a7c7b631e539
Parent:
156:ff21514d8981
Child:
170:e95d10626187
mbed library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1 /* mbed Microcontroller Library
AnnaBridge 156:ff21514d8981 2 * Copyright (c) 2015-2016 Nuvoton
AnnaBridge 156:ff21514d8981 3 *
AnnaBridge 156:ff21514d8981 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 156:ff21514d8981 5 * you may not use this file except in compliance with the License.
AnnaBridge 156:ff21514d8981 6 * You may obtain a copy of the License at
AnnaBridge 156:ff21514d8981 7 *
AnnaBridge 156:ff21514d8981 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 156:ff21514d8981 9 *
AnnaBridge 156:ff21514d8981 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 156:ff21514d8981 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 156:ff21514d8981 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 156:ff21514d8981 13 * See the License for the specific language governing permissions and
AnnaBridge 156:ff21514d8981 14 * limitations under the License.
AnnaBridge 156:ff21514d8981 15 */
AnnaBridge 156:ff21514d8981 16
AnnaBridge 156:ff21514d8981 17 #ifndef NU_BIT_UTIL_H
AnnaBridge 156:ff21514d8981 18 #define NU_BIT_UTIL_H
AnnaBridge 156:ff21514d8981 19
AnnaBridge 156:ff21514d8981 20 #if defined(__ICCARM__) && defined(TARGET_M0)
AnnaBridge 156:ff21514d8981 21 #include <arm_math.h>
AnnaBridge 156:ff21514d8981 22 #endif
AnnaBridge 156:ff21514d8981 23 #include "cmsis.h"
AnnaBridge 156:ff21514d8981 24
AnnaBridge 156:ff21514d8981 25 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 26 extern "C" {
AnnaBridge 156:ff21514d8981 27 #endif
AnnaBridge 156:ff21514d8981 28
AnnaBridge 156:ff21514d8981 29 __STATIC_INLINE int nu_clz(uint32_t x)
AnnaBridge 156:ff21514d8981 30 {
AnnaBridge 156:ff21514d8981 31 return __CLZ(x);
AnnaBridge 156:ff21514d8981 32 }
AnnaBridge 156:ff21514d8981 33
AnnaBridge 156:ff21514d8981 34 __STATIC_INLINE int nu_clo(uint32_t x)
AnnaBridge 156:ff21514d8981 35 {
AnnaBridge 156:ff21514d8981 36 return nu_clz(~x);
AnnaBridge 156:ff21514d8981 37 }
AnnaBridge 156:ff21514d8981 38
AnnaBridge 156:ff21514d8981 39 __STATIC_INLINE int nu_ctz(uint32_t x)
AnnaBridge 156:ff21514d8981 40 {
AnnaBridge 156:ff21514d8981 41 int c = __CLZ(x & -x);
AnnaBridge 156:ff21514d8981 42 return x ? 31 - c : c;
AnnaBridge 156:ff21514d8981 43 }
AnnaBridge 156:ff21514d8981 44
AnnaBridge 156:ff21514d8981 45 __STATIC_INLINE int nu_cto(uint32_t x)
AnnaBridge 156:ff21514d8981 46 {
AnnaBridge 156:ff21514d8981 47 return nu_ctz(~x);
AnnaBridge 156:ff21514d8981 48 }
AnnaBridge 156:ff21514d8981 49
AnnaBridge 156:ff21514d8981 50
AnnaBridge 156:ff21514d8981 51 __STATIC_INLINE uint16_t nu_get16_le(const uint8_t *pos)
AnnaBridge 156:ff21514d8981 52 {
AnnaBridge 156:ff21514d8981 53 uint16_t val;
AnnaBridge 156:ff21514d8981 54
AnnaBridge 156:ff21514d8981 55 val = *pos ++;
AnnaBridge 156:ff21514d8981 56 val += (*pos << 8);
AnnaBridge 156:ff21514d8981 57
AnnaBridge 156:ff21514d8981 58 return val;
AnnaBridge 156:ff21514d8981 59 }
AnnaBridge 156:ff21514d8981 60
AnnaBridge 156:ff21514d8981 61 __STATIC_INLINE void nu_set16_le(uint8_t *pos, uint16_t val)
AnnaBridge 156:ff21514d8981 62 {
AnnaBridge 156:ff21514d8981 63 *pos ++ = val & 0xFF;
AnnaBridge 156:ff21514d8981 64 *pos = val >> 8;
AnnaBridge 156:ff21514d8981 65 }
AnnaBridge 156:ff21514d8981 66
AnnaBridge 156:ff21514d8981 67 __STATIC_INLINE uint32_t nu_get32_le(const uint8_t *pos)
AnnaBridge 156:ff21514d8981 68 {
AnnaBridge 156:ff21514d8981 69 uint32_t val;
AnnaBridge 156:ff21514d8981 70
AnnaBridge 156:ff21514d8981 71 val = *pos ++;
AnnaBridge 156:ff21514d8981 72 val += (*pos ++ << 8);
AnnaBridge 156:ff21514d8981 73 val += (*pos ++ << 16);
AnnaBridge 156:ff21514d8981 74 val += (*pos ++ << 24);
AnnaBridge 156:ff21514d8981 75
AnnaBridge 156:ff21514d8981 76 return val;
AnnaBridge 156:ff21514d8981 77 }
AnnaBridge 156:ff21514d8981 78
AnnaBridge 156:ff21514d8981 79 __STATIC_INLINE void nu_set32_le(uint8_t *pos, uint32_t val)
AnnaBridge 156:ff21514d8981 80 {
AnnaBridge 156:ff21514d8981 81 *pos ++ = val & 0xFF;
AnnaBridge 156:ff21514d8981 82 *pos ++ = (val >> 8) & 0xFF;
AnnaBridge 156:ff21514d8981 83 *pos ++ = (val >> 16) & 0xFF;
AnnaBridge 156:ff21514d8981 84 *pos = (val >> 24) & 0xFF;
AnnaBridge 156:ff21514d8981 85 }
AnnaBridge 156:ff21514d8981 86
AnnaBridge 156:ff21514d8981 87 __STATIC_INLINE uint16_t nu_get16_be(const uint8_t *pos)
AnnaBridge 156:ff21514d8981 88 {
AnnaBridge 156:ff21514d8981 89 uint16_t val;
AnnaBridge 156:ff21514d8981 90
AnnaBridge 156:ff21514d8981 91 val = *pos ++;
AnnaBridge 156:ff21514d8981 92 val <<= 8;
AnnaBridge 156:ff21514d8981 93 val += *pos;
AnnaBridge 156:ff21514d8981 94
AnnaBridge 156:ff21514d8981 95 return val;
AnnaBridge 156:ff21514d8981 96 }
AnnaBridge 156:ff21514d8981 97
AnnaBridge 156:ff21514d8981 98 __STATIC_INLINE void nu_set16_be(uint8_t *pos, uint16_t val)
AnnaBridge 156:ff21514d8981 99 {
AnnaBridge 156:ff21514d8981 100 *pos ++ = val >> 8;
AnnaBridge 156:ff21514d8981 101 *pos = (val & 0xFF);
AnnaBridge 156:ff21514d8981 102 }
AnnaBridge 156:ff21514d8981 103
AnnaBridge 156:ff21514d8981 104 __STATIC_INLINE uint32_t nu_get32_be(const uint8_t *pos)
AnnaBridge 156:ff21514d8981 105 {
AnnaBridge 156:ff21514d8981 106 uint32_t val;
AnnaBridge 156:ff21514d8981 107
AnnaBridge 156:ff21514d8981 108 val = *pos ++;
AnnaBridge 156:ff21514d8981 109 val <<= 8;
AnnaBridge 156:ff21514d8981 110 val += *pos ++;
AnnaBridge 156:ff21514d8981 111 val <<= 8;
AnnaBridge 156:ff21514d8981 112 val += *pos ++;
AnnaBridge 156:ff21514d8981 113 val <<= 8;
AnnaBridge 156:ff21514d8981 114 val += *pos;
AnnaBridge 156:ff21514d8981 115
AnnaBridge 156:ff21514d8981 116 return val;
AnnaBridge 156:ff21514d8981 117 }
AnnaBridge 156:ff21514d8981 118
AnnaBridge 156:ff21514d8981 119 __STATIC_INLINE void nu_set32_be(uint8_t *pos, uint32_t val)
AnnaBridge 156:ff21514d8981 120 {
AnnaBridge 156:ff21514d8981 121 *pos ++ = val >> 24;
AnnaBridge 156:ff21514d8981 122 *pos ++ = val >> 16;
AnnaBridge 156:ff21514d8981 123 *pos ++ = val >> 8;
AnnaBridge 156:ff21514d8981 124 *pos ++ = (val & 0xFF);
AnnaBridge 156:ff21514d8981 125 }
AnnaBridge 156:ff21514d8981 126
AnnaBridge 156:ff21514d8981 127 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 128 }
AnnaBridge 156:ff21514d8981 129 #endif
AnnaBridge 156:ff21514d8981 130
AnnaBridge 156:ff21514d8981 131 #endif