 Matiq
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8fad2bbfd9
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P3.5: acc_437c0 = data shuffle (re/im repack + zero-fill), not arithmetic; full butterfly = twiddle load + shuffle + mult + combine
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2026-08-20 08:48:00 +03:00 |
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Matiq
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feb44c3802
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P3.4: transcribe plugin's own vectorized ln(x) (vlog.cpp, minimax ln(1+x) poly + ln2 range-reduction); correct prior misread — dispatch reaches runtime ln, not FFT; vlog_check ALL OK (rel 2.4e-7)
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2026-08-20 07:12:56 +03:00 |
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Matiq
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7bbe7cce05
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P3.3: final kernels use own vectorized sin/cos (SVML-like poly+exp, ln2=0.693147) not twiddle table for big-N; poly constants captured from rodata
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2026-08-20 05:56:12 +03:00 |
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Matiq
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2a7b88e704
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P3.2: map full 4-level FFT dispatch (535a70->140a10/70->jumptable->runtime table->6 final split-radix kernels 0x1802a24c0..2ce4a0); kernels force MXCSR round-to-nearest
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2026-08-20 02:58:01 +03:00 |
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Matiq
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88422034f5
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P3.1: extract FFT code from rt snap (extract_fft.py); decode cplx_mul 0x8440 = in-place elementwise double mult, twiddle loader 0x39b00 stride copy, dispatcher 0x535a70->0x140a10/70->jumptable[0x1826159a0]=4; implement cplx_mul_scalar_inplace
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2026-08-20 02:25:59 +03:00 |
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Matiq
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00d8623b92
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notes: twiddle = 1024-entry sin table with stride sampling
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2026-08-16 23:38:16 +03:00 |
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Matiq
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0d16c5f4b9
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docs: giant FFT plan generator analysis (notes_giant_fft.md)
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2026-08-16 23:10:12 +03:00 |
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