CSI-DSP  Version 1.0.0
CSI DSP Software Library
宏定义 | 变量
csky_common_tables.h 文件参考

宏定义

#define twiddleCoef
 
#define CSKYBITREVINDEXTABLE__16_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE__32_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE__64_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_128_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_256_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_512_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE1024_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE2048_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE4096_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH
 
#define CSKYBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH
 

变量

const uint16_t cskyBitRevTable [1024]
 
const q15_t cskyRecipTableQ15 [64]
 
const q31_t cskyRecipTableQ31 [64]
 
const float32_t twiddleCoef_16 [32]
 
const float32_t twiddleCoef_32 [64]
 
const float32_t twiddleCoef_64 [128]
 
const float32_t twiddleCoef_128 [256]
 
const float32_t twiddleCoef_256 [512]
 
const float32_t twiddleCoef_512 [1024]
 
const float32_t twiddleCoef_1024 [2048]
 
const float32_t twiddleCoef_2048 [4096]
 
const float32_t twiddleCoef_4096 [8192]
 
const q31_t twiddleCoef_16_q31 [24]
 
const q31_t twiddleCoef_32_q31 [48]
 
const q31_t twiddleCoef_64_q31 [96]
 
const q31_t twiddleCoef_128_q31 [192]
 
const q31_t twiddleCoef_256_q31 [384]
 
const q31_t twiddleCoef_512_q31 [768]
 
const q31_t twiddleCoef_1024_q31 [1536]
 
const q31_t twiddleCoef_2048_q31 [3072]
 
const q31_t twiddleCoef_4096_q31 [6144]
 
const q15_t twiddleCoef_16_q15 [24]
 
const q15_t twiddleCoef_32_q15 [48]
 
const q15_t twiddleCoef_64_q15 [96]
 
const q15_t twiddleCoef_128_q15 [192]
 
const q15_t twiddleCoef_256_q15 [384]
 
const q15_t twiddleCoef_512_q15 [768]
 
const q15_t twiddleCoef_1024_q15 [1536]
 
const q15_t twiddleCoef_2048_q15 [3072]
 
const q15_t twiddleCoef_4096_q15 [6144]
 
const float32_t twiddleCoef_rfft_32 [32]
 
const float32_t twiddleCoef_rfft_64 [64]
 
const float32_t twiddleCoef_rfft_128 [128]
 
const float32_t twiddleCoef_rfft_256 [256]
 
const float32_t twiddleCoef_rfft_512 [512]
 
const float32_t twiddleCoef_rfft_1024 [1024]
 
const float32_t twiddleCoef_rfft_2048 [2048]
 
const float32_t twiddleCoef_rfft_4096 [4096]
 
const uint16_t cskyBitRevIndexTable16 [CSKYBITREVINDEXTABLE__16_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable32 [CSKYBITREVINDEXTABLE__32_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable64 [CSKYBITREVINDEXTABLE__64_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable128 [CSKYBITREVINDEXTABLE_128_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable256 [CSKYBITREVINDEXTABLE_256_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable512 [CSKYBITREVINDEXTABLE_512_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable1024 [CSKYBITREVINDEXTABLE1024_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable2048 [CSKYBITREVINDEXTABLE2048_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable4096 [CSKYBITREVINDEXTABLE4096_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_16 [CSKYBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_32 [CSKYBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_64 [CSKYBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_128 [CSKYBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_256 [CSKYBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_512 [CSKYBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_1024 [CSKYBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_2048 [CSKYBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH]
 
const uint16_t cskyBitRevIndexTable_fixed_4096 [CSKYBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH]
 
const float32_t sinTable_f32 [FAST_MATH_TABLE_SIZE+1]
 
const q31_t sinTable_q31 [FAST_MATH_TABLE_SIZE+1]
 
const q15_t sinTable_q15 [FAST_MATH_TABLE_SIZE+1]
 

宏定义说明

#define CSKYBITREVINDEXTABLE1024_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE2048_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE4096_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_128_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_256_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_512_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE__16_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE__32_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE__64_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH
#define CSKYBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH
#define twiddleCoef

变量说明

const uint16_t cskyBitRevIndexTable1024[CSKYBITREVINDEXTABLE1024_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable128[CSKYBITREVINDEXTABLE_128_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable16[CSKYBITREVINDEXTABLE__16_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable2048[CSKYBITREVINDEXTABLE2048_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable256[CSKYBITREVINDEXTABLE_256_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable32[CSKYBITREVINDEXTABLE__32_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable4096[CSKYBITREVINDEXTABLE4096_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable512[CSKYBITREVINDEXTABLE_512_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable64[CSKYBITREVINDEXTABLE__64_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_1024[CSKYBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_128[CSKYBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_16[CSKYBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_2048[CSKYBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_256[CSKYBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_32[CSKYBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_4096[CSKYBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_512[CSKYBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH]
const uint16_t cskyBitRevIndexTable_fixed_64[CSKYBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH]
const q15_t cskyRecipTableQ15[64]

end of CFFT_CIFFT group

const q31_t cskyRecipTableQ31[64]
const float32_t sinTable_f32[FAST_MATH_TABLE_SIZE+1]
浮点正弦表生成的示例代码: 
tableSize = 512;
for(n = 0; n < (tableSize + 1); n++)
{
     sinTable[n]=sin(2*pi*n/tableSize);
}
其中 pi 值是 3.14159265358979
const q15_t sinTable_q15[FAST_MATH_TABLE_SIZE+1]
表中的值是Q15格式 (1.15 定点格式) ，并且以3步生成。 第一步，生成浮点数的正弦值: 
tableSize = 512;
for(n = 0; n < (tableSize + 1); n++)
{
     sinTable[n]= sin(2*pi*n/tableSize);
}
其中 pi 的值是 3.14159265358979
第二步，转换浮点到 Q15 (定点): (sinTable[i] * pow(2, 15))
第三步，舍入到最接近的整数值: sinTable[i] += (sinTable[i] > 0 ? 0.5 :-0.5);
const q31_t sinTable_q31[FAST_MATH_TABLE_SIZE+1]
表中的值是Q31格式 (1.31 定点格式) ，并且以3步生成。 第一步，生成浮点数的正弦值: 
tableSize = 512;
for(n = 0; n < (tableSize + 1); n++)
{
     sinTable[n]= sin(2*pi*n/tableSize);
}
其中 pi 的值是 3.14159265358979
第二步，转换浮点到Q31 (定点): (sinTable[i] * pow(2, 31))
第三步，舍入到最接近的整数值: sinTable[i] += (sinTable[i] > 0 ? 0.5 :-0.5);
const float32_t twiddleCoef_rfft_1024[1024]
const float32_t twiddleCoef_rfft_128[128]
const float32_t twiddleCoef_rfft_2048[2048]
const float32_t twiddleCoef_rfft_256[256]
const float32_t twiddleCoef_rfft_32[32]
浮点RFFT 旋转因子生成的示例代码: 
TW = exp(2*pi*i*[0:L/2-1]/L - pi/2*i).'
Real 和 Imag 值以交错方式如下
const float32_t twiddleCoef_rfft_4096[4096]
const float32_t twiddleCoef_rfft_512[512]
const float32_t twiddleCoef_rfft_64[64]