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#include "ref.h"
;/*
;* @brief In-place bit reversal function.
;* @param[in, out] *pSrc points to the in-place buffer of unknown 32-bit data type.
;* @param[in] bitRevLen bit reversal table length
;* @param[in] *pBitRevTab points to bit reversal table.
;* @return none.
;*/
void arm_bitreversal_32(uint32_t *pSrc, uint32_t bitRevLen, uint32_t *pBitRevTab)
{
uint32_t a,b,i,tmp;
for(i=0; i<bitRevLen; i++)
{
a = pBitRevTab[2*i];
b = pBitRevTab[2*i + 1];
//real
tmp = pSrc[a];
pSrc[a] = pSrc[b];
pSrc[b] = tmp;
//complex
tmp = pSrc[a+1];
pSrc[a+1] = pSrc[b+1];
pSrc[b+1] = tmp;
}
}
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