perf: double fast_cast - #1407

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DiamonDinoia:feat/common-d2i-fast-cast

Commits on Sep 2, 2026

fix: make sve and rvv fast_cast visible to the dispatcher
DiamonDinoia
committed
fd7bcc6
perf: native sse2 trunc for batch<double>
DiamonDinoia
committed
7e7e764
feat: common double -> int64 fast_cast
DiamonDinoia
committed
dea9546