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arm_biquad_cascade_df1_32x64_q31: asrl(val, -shift) -> lsll(val, shift) #7

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Merged
merged 1 commit into from
Aug 14, 2025
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arm_biquad_cascade_df1_32x64_q31: asrl(val, -shift) -> lsll(val, shift) #7

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22 changes: 11 additions & 11 deletions Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_q31.c
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Original file line number Diff line number Diff line change
Expand Up @@ -354,7 +354,7 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
vecIn = vld1q(pIn1);
pIn1 += 1;
Yn1 = vmlaldavaq(Yn1, vecIn, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
/*
* Store the output in the destination buffer in 1.31 format.
*/
Expand All @@ -376,7 +376,7 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn1 = vmlaldavaq(Yn1, vecIn0, vecCoef);
vecIn = vld1q(pIn1);
pIn1 += 1;
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
/*
* Store the output in the destination buffer in 1.31 format.
*/
Expand All @@ -389,7 +389,7 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn1 = vmlaldavaq(Yn1, vecIn1, vecCoef);
vecIn0 = vld1q(pIn1);
pIn1 += 1;
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);

acc = mult32x64(Yn1, a1);
Expand All @@ -399,7 +399,7 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn1 = vmlaldavaq(Yn1, vecIn2, vecCoef);
vecIn1 = vld1q(pIn1);
pIn1 += 1;
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);

acc = mult32x64(Yn1, a1);
Expand All @@ -409,7 +409,7 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn1 = vmlaldavaq(Yn1, vecIn, vecCoef);
vecIn2 = vld1q(pIn1);
pIn1 += 1;
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);
/*
* Decrement the loop counter
Expand All @@ -433,7 +433,7 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn2 = Yn1;
Yn1 = acc;
Yn1 = vmlaldavaq(Yn1, vecIn0, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);
/*
* save input state
Expand All @@ -449,15 +449,15 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn2 = Yn1;
Yn1 = acc;
Yn1 = vmlaldavaq(Yn1, vecIn0, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);

acc = mult32x64(Yn1, a1);
acc += mult32x64(Yn2, a2);
Yn2 = Yn1;
Yn1 = acc;
Yn1 = vmlaldavaq(Yn1, vecIn1, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);
/*
* save input state
Expand All @@ -473,23 +473,23 @@ ARM_DSP_ATTRIBUTE void arm_biquad_cas_df1_32x64_q31(
Yn2 = Yn1;
Yn1 = acc;
Yn1 = vmlaldavaq(Yn1, vecIn0, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);

acc = mult32x64(Yn1, a1);
acc += mult32x64(Yn2, a2);
Yn2 = Yn1;
Yn1 = acc;
Yn1 = vmlaldavaq(Yn1, vecIn1, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);

acc = mult32x64(Yn1, a1);
acc += mult32x64(Yn2, a2);
Yn2 = Yn1;
Yn1 = acc;
Yn1 = vmlaldavaq(Yn1, vecIn2, vecCoef);
Yn1 = asrl(Yn1, -shift);
Yn1 = lsll(Yn1, shift);
*pOut++ = (q31_t) (Yn1 >> 32);
/*
* save input state
Expand Down