void arm_sub_q15(
q15_t * pSrcA,
q15_t * pSrcB,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#ifndef ARM_MATH_CM0
/* Run the below code for Cortex-M4 and Cortex-M3 */
/*loop Unrolling */
blkCnt = blockSize >> 2u;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while(blkCnt > 0u) {
/* C = A - B */
/* Subtract and then store the results in the destination buffer two samples at a time. */
*__SIMD32(pDst)++ = __QSUB16(*__SIMD32(pSrcA)++, *__SIMD32(pSrcB)++);
*__SIMD32(pDst)++ = __QSUB16(*__SIMD32(pSrcA)++, *__SIMD32(pSrcB)++);
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize % 0x4u;
while(blkCnt > 0u) {
/* C = A - B */
/* Subtract and then store the result in the destination buffer. */
*pDst++ = (q15_t) __QSUB16(*pSrcA++, *pSrcB++);
/* Decrement the loop counter */
blkCnt--;
}
#else
/* Run the below code for Cortex-M0 */
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
while(blkCnt > 0u) {
/* C = A - B */
/* Subtract and then store the result in the destination buffer. */
*pDst++ = (q15_t) __SSAT(((q31_t) * pSrcA++ - *pSrcB++), 16);
/* Decrement the loop counter */
blkCnt--;
}
#endif /* #ifndef ARM_MATH_CM0 */
}
void arm_sub_q15(
q15_t * pSrcA,
q15_t * pSrcB,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
/*loop Unrolling */
blkCnt = blockSize >> 2u;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while(blkCnt > 0u)
{
/* C = A - B */
/* Subtract and then store the results in the destination buffer two samples at a time. */
*__SIMD32(pDst)++ = __QSUB16(*__SIMD32(pSrcA)++, *__SIMD32(pSrcB)++);
*__SIMD32(pDst)++ = __QSUB16(*__SIMD32(pSrcA)++, *__SIMD32(pSrcB)++);
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize % 0x4u;
while(blkCnt > 0u)
{
/* C = A - B */
/* Subtract and then store the result in the destination buffer. */
*pDst++ = (q15_t) __QSUB16(*pSrcA++, *pSrcB++);
/* Decrement the loop counter */
blkCnt--;
}
}
void arm_negate_q15(
q15_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
q15_t in;
#ifndef ARM_MATH_CM0
/* Run the below code for Cortex-M4 and Cortex-M3 */
q31_t in1, in2; /* Temporary variables */
/*loop Unrolling */
blkCnt = blockSize >> 2u;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while(blkCnt > 0u)
{
/* C = -A */
/* Read two inputs at a time */
in1 = _SIMD32_OFFSET(pSrc);
in2 = _SIMD32_OFFSET(pSrc + 2);
/* negate two samples at a time */
in1 = __QSUB16(0, in1);
/* negate two samples at a time */
in2 = __QSUB16(0, in2);
/* store the result to destination 2 samples at a time */
_SIMD32_OFFSET(pDst) = in1;
/* store the result to destination 2 samples at a time */
_SIMD32_OFFSET(pDst + 2) = in2;
/* update pointers to process next samples */
pSrc += 4u;
pDst += 4u;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize % 0x4u;
#else
/* Run the below code for Cortex-M0 */
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #ifndef ARM_MATH_CM0 */
while(blkCnt > 0u)
{
/* C = -A */
/* Negate and then store the result in the destination buffer. */
in = *pSrc++;
*pDst++ = (in == (q15_t) 0x8000) ? 0x7fff : -in;
/* Decrement the loop counter */
blkCnt--;
}
}
void arm_sub_q15(
const q15_t * pSrcA,
const q15_t * pSrcB,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* Loop counter */
#if defined (ARM_MATH_LOOPUNROLL)
#if defined (ARM_MATH_DSP)
q31_t inA1, inA2;
q31_t inB1, inB2;
#endif
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A - B */
#if defined (ARM_MATH_DSP)
/* read 2 times 2 samples at a time from sourceA */
inA1 = read_q15x2_ia ((q15_t **) &pSrcA);
inA2 = read_q15x2_ia ((q15_t **) &pSrcA);
/* read 2 times 2 samples at a time from sourceB */
inB1 = read_q15x2_ia ((q15_t **) &pSrcB);
inB2 = read_q15x2_ia ((q15_t **) &pSrcB);
/* Subtract and store 2 times 2 samples at a time */
write_q15x2_ia (&pDst, __QSUB16(inA1, inB1));
write_q15x2_ia (&pDst, __QSUB16(inA2, inB2));
#else
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
#endif
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A - B */
/* Subtract and store result in destination buffer. */
#if defined (ARM_MATH_DSP)
*pDst++ = (q15_t) __QSUB16(*pSrcA++, *pSrcB++);
#else
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
#endif
/* Decrement loop counter */
blkCnt--;
}
}
void arm_abs_q15(
q15_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
#ifndef ARM_MATH_CM0
/* Run the below code for Cortex-M4 and Cortex-M3 */
q15_t in1; /* Input value1 */
q15_t in2; /* Input value2 */
/*loop Unrolling */
blkCnt = blockSize >> 2u;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while(blkCnt > 0u)
{
/* C = |A| */
/* Read two inputs */
in1 = *pSrc++;
in2 = *pSrc++;
/* Store the Absolute result in the destination buffer by packing the two values, in a single cycle */
#ifndef ARM_MATH_BIG_ENDIAN
*__SIMD32(pDst)++ =
__PKHBT(((in1 > 0) ? in1 : __QSUB16(0, in1)),
((in2 > 0) ? in2 : __QSUB16(0, in2)), 16);
#else
*__SIMD32(pDst)++ =
__PKHBT(((in2 > 0) ? in2 : __QSUB16(0, in2)),
((in1 > 0) ? in1 : __QSUB16(0, in1)), 16);
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
in1 = *pSrc++;
in2 = *pSrc++;
#ifndef ARM_MATH_BIG_ENDIAN
*__SIMD32(pDst)++ =
__PKHBT(((in1 > 0) ? in1 : __QSUB16(0, in1)),
((in2 > 0) ? in2 : __QSUB16(0, in2)), 16);
#else
*__SIMD32(pDst)++ =
__PKHBT(((in2 > 0) ? in2 : __QSUB16(0, in2)),
((in1 > 0) ? in1 : __QSUB16(0, in1)), 16);
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize % 0x4u;
while(blkCnt > 0u)
{
/* C = |A| */
/* Read the input */
in1 = *pSrc++;
/* Calculate absolute value of input and then store the result in the destination buffer. */
*pDst++ = (in1 > 0) ? in1 : __QSUB16(0, in1);
/* Decrement the loop counter */
blkCnt--;
}
#else
/* Run the below code for Cortex-M0 */
q15_t in; /* Temporary input variable */
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
while(blkCnt > 0u)
{
/* C = |A| */
/* Read the input */
in = *pSrc++;
/* Calculate absolute value of input and then store the result in the destination buffer. */
*pDst++ = (in > 0) ? in : ((in == (q15_t) 0x8000) ? 0x7fff : -in);
/* Decrement the loop counter */
blkCnt--;
}
#endif /* #ifndef ARM_MATH_CM0 */
}
buffer_c16_t TranslateByFSOver4AndDecimateBy2CIC3::execute(const buffer_c8_t& src, const buffer_c16_t& dst) {
/* Translates incoming complex<int8_t> samples by -fs/4,
* decimates by two using a non-recursive third-order CIC filter.
*/
/* Derivation of algorithm:
* Original CIC filter (decimating by two):
* D_I0 = i3 * 1 + i2 * 3 + i1 * 3 + i0 * 1
* D_Q0 = q3 * 1 + q2 * 3 + q1 * 3 + q0 * 1
*
* D_I1 = i5 * 1 + i4 * 3 + i3 * 3 + i2 * 1
* D_Q1 = q5 * 1 + q4 * 3 + q3 * 3 + q2 * 1
*
* Translate -fs/4, phased 180 degrees, accomplished by complex multiplication
* of complex length-4 sequence:
*
* Substitute:
* i0 = -i0, q0 = -q0
* i1 = -q1, q1 = i1
* i2 = i2, q2 = q2
* i3 = q3, q3 = -i3
* i4 = -i4, q4 = -q4
* i5 = -q5, q5 = i5
*
* Resulting taps (with decimation by 2, four samples in, two samples out):
* D_I0 = q3 * 1 + i2 * 3 + -q1 * 3 + -i0 * 1
* D_Q0 = -i3 * 1 + q2 * 3 + i1 * 3 + -q0 * 1
*
* D_I1 = -q5 * 1 + -i4 * 3 + q3 * 3 + i2 * 1
* D_Q1 = i5 * 1 + -q4 * 3 + -i3 * 3 + q2 * 1
*/
// 6 cycles per complex input sample, not including loop overhead.
uint32_t q1_i0 = _q1_i0;
uint32_t q0_i1 = _q0_i1;
/* 3:1 Scaled by 32 to normalize output to +/-32768-ish. */
constexpr uint32_t scale_factor = 32;
const uint32_t k_3_1 = 0x00030001 * scale_factor;
uint32_t* src_p = reinterpret_cast<uint32_t*>(&src.p[0]);
uint32_t* const src_end = reinterpret_cast<uint32_t*>(&src.p[src.count]);
uint32_t* dst_p = reinterpret_cast<uint32_t*>(&dst.p[0]);
while(src_p < src_end) {
const uint32_t q3_i3_q2_i2 = *(src_p++); // 3
const uint32_t q5_i5_q4_i4 = *(src_p++);
const uint32_t i2_i3 = __SXTB16(q3_i3_q2_i2, 16); // 1: (q3_i3_q2_i2 ror 16)[23:16]:(q3_i3_q2_i2 ror 16)[7:0]
const uint32_t q3_q2 = __SXTB16(q3_i3_q2_i2, 8); // 1: (q3_i3_q2_i2 ror 8)[23:16]:(q3_i3_q2_i2 ror 8)[7:0]
const uint32_t i2_q3 = __PKHTB(i2_i3, q3_q2, 16); // 1: Rn[31:16]:(Rm>>16)[15:0]
const uint32_t i3_q2 = __PKHBT(q3_q2, i2_i3, 16); // 1:(Rm<<16)[31:16]:Rn[15:0]
// D_I0 = 3 * (i2 - q1) + (q3 - i0)
const uint32_t i2_m_q1_q3_m_i0 = __QSUB16(i2_q3, q1_i0); // 1: Rn[31:16]-Rm[31:16]:Rn[15:0]-Rm[15:0]
const uint32_t d_i0 = __SMUAD(k_3_1, i2_m_q1_q3_m_i0); // 1: Rm[15:0]*Rs[15:0]+Rm[31:16]*Rs[31:16]
// D_Q0 = 3 * (q2 + i1) - (i3 + q0)
const uint32_t i3_p_q0_q2_p_i1 = __QADD16(i3_q2, q0_i1); // 1: Rn[31:16]+Rm[31:16]:Rn[15:0]+Rm[15:0]
const uint32_t d_q0 = __SMUSDX(i3_p_q0_q2_p_i1, k_3_1); // 1: Rm[15:0]*Rs[31:16]–Rm[31:16]*RsX[15:0]
const uint32_t d_q0_i0 = __PKHBT(d_i0, d_q0, 16); // 1: (Rm<<16)[31:16]:Rn[15:0]
const uint32_t i5_i4 = __SXTB16(q5_i5_q4_i4, 0); // 1: (q5_i5_q4_i4 ror 0)[23:16]:(q5_i5_q4_i4 ror 0)[7:0]
const uint32_t q4_q5 = __SXTB16(q5_i5_q4_i4, 24); // 1: (q5_i5_q4_i4 ror 24)[23:16]:(q5_i5_q4_i4 ror 24)[7:0]
const uint32_t q4_i5 = __PKHTB(q4_q5, i5_i4, 16); // 1: Rn[31:16]:(Rm>>16)[15:0]
const uint32_t q5_i4 = __PKHBT(i5_i4, q4_q5, 16); // 1: (Rm<<16)[31:16]:Rn[15:0]
// D_I1 = (i2 - q5) + 3 * (q3 - i4)
const uint32_t i2_m_q5_q3_m_i4 = __QSUB16(i2_q3, q5_i4); // 1: Rn[31:16]-Rm[31:16]:Rn[15:0]-Rm[15:0]
const uint32_t d_i1 = __SMUADX(i2_m_q5_q3_m_i4, k_3_1); // 1: Rm[15:0]*Rs[31:16]+Rm[31:16]*Rs[15:0]
// D_Q1 = (i5 + q2) - 3 * (q4 + i3)
const uint32_t q4_p_i3_i5_p_q2 = __QADD16(q4_i5, i3_q2); // 1: Rn[31:16]+Rm[31:16]:Rn[15:0]+Rm[15:0]
const uint32_t d_q1 = __SMUSD(k_3_1, q4_p_i3_i5_p_q2); // 1: Rm[15:0]*Rs[15:0]–Rm[31:16]*Rs[31:16]
const uint32_t d_q1_i1 = __PKHBT(d_i1, d_q1, 16); // 1: (Rm<<16)[31:16]:Rn[15:0]
*(dst_p++) = d_q0_i0; // 3
*(dst_p++) = d_q1_i1;
q1_i0 = q5_i4;
q0_i1 = q4_i5;
}
_q1_i0 = q1_i0;
_q0_i1 = q0_i1;
return { dst.p, src.count / 2, src.sampling_rate / 2 };
}
arm_status arm_mat_sub_q15(
const arm_matrix_instance_q15 * pSrcA,
const arm_matrix_instance_q15 * pSrcB,
arm_matrix_instance_q15 * pDst)
{
q15_t *pInA = pSrcA->pData; /* input data matrix pointer A */
q15_t *pInB = pSrcB->pData; /* input data matrix pointer B */
q15_t *pOut = pDst->pData; /* output data matrix pointer */
uint32_t numSamples; /* total number of elements in the matrix */
uint32_t blkCnt; /* loop counters */
arm_status status; /* status of matrix subtraction */
#ifdef ARM_MATH_MATRIX_CHECK
/* Check for matrix mismatch condition */
if((pSrcA->numRows != pSrcB->numRows) ||
(pSrcA->numCols != pSrcB->numCols) ||
(pSrcA->numRows != pDst->numRows) || (pSrcA->numCols != pDst->numCols)) {
/* Set status as ARM_MATH_SIZE_MISMATCH */
status = ARM_MATH_SIZE_MISMATCH;
} else
#endif /* #ifdef ARM_MATH_MATRIX_CHECK */
{
/* Total number of samples in the input matrix */
numSamples = (uint32_t) pSrcA->numRows * pSrcA->numCols;
#ifndef ARM_MATH_CM0
/* Run the below code for Cortex-M4 and Cortex-M3 */
/* Apply loop unrolling */
blkCnt = numSamples >> 2u;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
** a second loop below computes the remaining 1 to 3 samples. */
while(blkCnt > 0u) {
/* C(m,n) = A(m,n) - B(m,n) */
/* Subtract, Saturate and then store the results in the destination buffer. */
*__SIMD32(pOut)++ = __QSUB16(*__SIMD32(pInA)++, *__SIMD32(pInB)++);
*__SIMD32(pOut)++ = __QSUB16(*__SIMD32(pInA)++, *__SIMD32(pInB)++);
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = numSamples % 0x4u;
while(blkCnt > 0u) {
/* C(m,n) = A(m,n) - B(m,n) */
/* Subtract and then store the results in the destination buffer. */
*pOut++ = (q15_t) __QSUB16(*pInA++, *pInB++);
/* Decrement the loop counter */
blkCnt--;
}
#else
/* Run the below code for Cortex-M0 */
/* Initialize blkCnt with number of samples */
blkCnt = numSamples;
while(blkCnt > 0u) {
/* C(m,n) = A(m,n) - B(m,n) */
/* Subtract and then store the results in the destination buffer. */
*pOut++ = (q15_t) __SSAT(((q31_t) * pInA++ - *pInB++), 16);
/* Decrement the loop counter */
blkCnt--;
}
#endif /* #ifndef ARM_MATH_CM0 */
/* Set status as ARM_MATH_SUCCESS */
status = ARM_MATH_SUCCESS;
}
/* Return to application */
return (status);
}
/**
\brief Test case: TC_CoreSimd_ParAddSub16
\details
- Check Parallel 16-bit addition and subtraction:
__SADD16
__SSUB16
__SASX
__SSAX
__SHADD16
__SHSUB16
__SHASX
__SHSAX
__QADD16
__QSUB16
__QASX
__QSAX
__UADD16
__USUB16
__UASX
__USAX
__UHADD16
__UHSUB16
__UHASX
__UHSAX
__UQSUB16
__UQADD16
__UQASX
__UQSAX
*/
void TC_CoreSimd_ParAddSub16 (void) {
#if ((defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)) )
volatile uint32_t op1_u32, op2_u32;
volatile uint32_t res_u32;
volatile int32_t op1_s32, op2_s32;
volatile int32_t res_s32;
/* --- __SADD16 Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038001;
op2_s32 = (int32_t)0x00040002;
res_s32 = __SADD16(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80078003);
/* --- __SSUB16 Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80078003;
op2_s32 = (int32_t)0x00040002;
res_s32 = __SSUB16(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80038001);
/* --- __SASX Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80078003;
op2_s32 = (int32_t)0x00040002;
res_s32 = __SASX(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80097FFF);
/* --- __SSAX Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038007;
op2_s32 = (int32_t)0x00020004;
res_s32 = __SSAX(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x7FFF8009);
/* --- __SHADD16 Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038001;
op2_s32 = (int32_t)0x00040002;
res_s32 = __SHADD16(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0xC003C001);
/* --- __SHSUB16 Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80078003;
op2_s32 = (int32_t)0x00040002;
res_s32 = __SHSUB16(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0xC001C000);
/* --- __SHASX Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80078003;
op2_s32 = (int32_t)0x00040002;
res_s32 = __SHASX(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0xC004BFFF);
/* --- __SHSAX Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038007;
op2_s32 = (int32_t)0x00020004;
res_s32 = __SHSAX(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0xBFFFC004);
/* --- __QADD16 Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038000;
op2_s32 = (int32_t)0x00048002;
res_s32 = __QADD16(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80078000);
/* --- __QSUB16 Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038003;
op2_s32 = (int32_t)0x00040002;
res_s32 = __QSUB16(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80008001);
/* --- __QASX Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80078003;
op2_s32 = (int32_t)0x00040002;
res_s32 = __QASX(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80098000);
/* --- __QSAX Test ---------------------------------------------- */
op1_s32 = (int32_t)0x80038007;
op2_s32 = (int32_t)0x00020004;
res_s32 = __QSAX(op1_s32, op2_s32);
ASSERT_TRUE(res_s32 == (int32_t)0x80008009);
/* --- __UADD16 Test ---------------------------------------------- */
op1_u32 = 0x00010002;
op2_u32 = 0x00020004;
res_u32 = __UADD16(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x00030006);
/* --- __USUB16 Test ---------------------------------------------- */
op1_u32 = 0x00030006;
op2_u32 = 0x00020004;
res_u32 = __USUB16(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x00010002);
/* --- __UASX Test ---------------------------------------------- */
op1_u32 = 0x80078003;
op2_u32 = 0x00040002;
res_u32 = __UASX(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x80097FFF);
/* --- __USAX Test ---------------------------------------------- */
op1_u32 = 0x80038007;
op2_u32 = 0x00020004;
res_u32 = __USAX(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x7FFF8009);
/* --- __UHADD16 Test ---------------------------------------------- */
op1_u32 = 0x00010002;
op2_u32 = 0x00020004;
res_u32 = __UHADD16(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x00010003);
/* --- __UHSUB16 Test ---------------------------------------------- */
op1_u32 = 0x00030006;
op2_u32 = 0x00020004;
res_u32 = __UHSUB16(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x00000001);
/* --- __UHASX Test ---------------------------------------------- */
op1_u32 = 0x80078003;
op2_u32 = 0x00040002;
res_u32 = __UHASX(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x40043FFF);
/* --- __UHSAX Test ---------------------------------------------- */
op1_u32 = 0x80038007;
op2_u32 = 0x00020004;
res_u32 = __UHSAX(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x3FFF4004);
/* --- __UQADD16 Test ---------------------------------------------- */
op1_u32 = 0xFFFE0002;
op2_u32 = 0x00020004;
res_u32 = __UQADD16(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0xFFFF0006);
/* --- __UQSUB16 Test ---------------------------------------------- */
op1_u32 = 0x00020006;
op2_u32 = 0x00030004;
res_u32 = __UQSUB16(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x00000002);
/* --- __UQASX Test ---------------------------------------------- */
op1_u32 = 0xFFF80003;
op2_u32 = 0x00040009;
res_u32 = __UQASX(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0xFFFF0000);
/* --- __UQSAX Test ---------------------------------------------- */
op1_u32 = 0x0003FFF8;
op2_u32 = 0x00090004;
res_u32 = __UQSAX(op1_u32, op2_u32);
ASSERT_TRUE(res_u32 == 0x0000FFFF);
#endif
}
void arm_abs_q15(
q15_t * pSrc,
q15_t * pDst,
uint32_t blockSize)
{
uint32_t blkCnt; /* loop counter */
q31_t in1, in2, in3, in4; /* temporary input variables */
q31_t out1, out2, out3, out4; /* temporary output variabels */
/*loop Unrolling */
blkCnt = blockSize >> 3u;
/* First part of the processing with loop unrolling. Compute 8 outputs at a time.
** a second loop below computes the remaining 1 to 7 samples. */
while(blkCnt > 0u)
{
/* C = |A| */
/* Read inputs */
in1 = (q31_t)*pSrc;
in2 = (q31_t)*(pSrc + 1);
in3 = (q31_t)*(pSrc + 2);
/* find absolute value */
out1 = (in1 > 0) ? in1 : __QSUB(0, in1);
/* read input */
in4 = (q31_t)*(pSrc + 3);
/* find absolute value */
out2 = (in2 > 0) ? in2 : __QSUB(0, in2);
/* store result to destination */
*pDst = (q15_t)out1;
/* find absolute value */
out3 = (in3 > 0) ? in3 : __QSUB(0, in3);
/* read input */
in1 = (q31_t)*(pSrc + 4);
/* find absolute value */
out4 = (in4 > 0) ? in4 : __QSUB(0, in4);
/* store result to destination */
*(pDst + 1) = (q15_t)out2;
/* read input */
in2 = (q31_t)*(pSrc + 5);
/* find absolute value */
out1 = (in1 > 0) ? in1 : __QSUB(0, in1);
/* store result to destination */
*(pDst + 2) = (q15_t)out3;
/* find absolute value */
out2 = (in2 > 0) ? in2 : __QSUB(0, in2);
/* read input */
in3 = (q31_t)*(pSrc + 6);
/* store result to destination */
*(pDst + 3) = (q15_t)out4;
/* read input */
in4 = (q31_t)*(pSrc + 7);
/* find absolute value */
out3 = (in3 > 0) ? in3 : __QSUB(0, in3);
/* store result to destination */
*(pDst + 4) = (q15_t)out1;
/* find absolute value */
out4 = (in4 > 0) ? in4 : __QSUB(0, in4);
/* store result to destination */
*(pDst + 5) = (q15_t)out2;
*(pDst + 6) = (q15_t)out3;
/* increment source pointer by 8 */
pSrc += 8u;
/* store result to destination */
*(pDst + 7) = (q15_t)out4;
/* increment destination pointer by 8 */
pDst += 8u;
/* Decrement the loop counter */
blkCnt--;
}
/* If the blockSize is not a multiple of 8, compute any remaining output samples here.
** No loop unrolling is used. */
blkCnt = blockSize % 0x8u;
while(blkCnt > 0u)
{
/* C = |A| */
/* Read the input */
in1 = *pSrc++;
/* Calculate absolute value of input and then store the result in the destination buffer. */
*pDst++ = (in1 > 0) ? in1 : __QSUB16(0, in1);
/* Decrement the loop counter */
blkCnt--;
}
}
