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refactor(dqn): Plan 1 Task 4E — DIR_* direction sub-index named constants (Invariant 8)

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Define DIR_SHORT=0, DIR_HOLD=1, DIR_LONG=2, DIR_FLAT=3, NUM_DIRECTIONS=4 in
state_layout.cuh. Migrate all literal dir_idx/raw_dir comparisons to named
constants across experience_kernels.cu (15 sites), trade_physics.cuh (3 sites),
and backtest_metrics_kernel.cu (2 sites). Raw integer comparisons (== 0/1/2/3)
eliminated from all direction-branch consumers.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
jgrusewski
2026-04-24 11:28:31 +02:00
parent fc2d65c1a3
commit 2ecf36b94c
5 changed files with 31 additions and 17 deletions
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docs/dqn-named-dims.md
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@@ -121,4 +121,5 @@ From the trade_plan MLP output.
- Task 4A (ps[0..PS_STRIDE) constants): commit 144c85b85
- Task 4B (plan_isv[0..6) constants): commit 741cb48d5
- Task 4C (plan_params[0..6) constants): commit 0ac83479e
- Task 4D (BRANCH_* constants): commit <SHA>
- Task 4D (BRANCH_* constants): commit 11755632b
- Task 4E (DIR_* direction sub-indices): commit TBD