factorial_mod_running

std.elementwise.factorial_mod_running · Level L1

Whether some k is still at most n, as 1 or 0. The condition factorial_mod loops on.

[some k ≤ n]

Signature

factorial_mod_running(k: i64[s], acc: i64[s], n: i64[s], m: i64[s]) → f64[]

Structure

The function as NOVA stores it: one box per input, operation and output, and arrows that carry values. A double border marks another library function this one runs — called once, or by Scan once per element; select it to open that function.

ki64[s]ni64[s]acci64[s]mi64[s]GreateroverReduceMinall_over1.0Subtractgogof64[]
  • input
  • operation
  • constant
  • call
  • output

Verification

  • Signature proven by NOVA’s shape solver, for every size.
  • Equal to the reference float(any(k <= n)) in exact rational arithmetic, on all 40 test cases.
  • All 40 float64 results are exact: the error is zero.
  • Interpreter and NumPy backend return bit-identical results.
  • At float32 too: the 40 test cases rounded to float32, and 40 of them exact, with zero error.
Accuracy in detail
correctly rounded (the float64 nearest the exact value)
100%
bit-equal to the NumPy formula in float64
100%
largest error, in units in the last place
0

Identity

Calls
—
Called by
sha256:61c131f50e055285af121adca1e016d7d2d2fc39f2f832aa5339f8fe3264e490

The semantic hash of the graph. It changes when the program changes, and never when only its documentation does.

Control handle

Symbol
Ω:std.elementwise.factorial_mod_running · Ω:factorial_mod_running
Pins
sha256:413bf41bb8ae424a04540a5c34ccfad74479c80c6ceb50b10d79ba88a376c1cathis graph alone
Evidence
sha256:b6c3b2c9f44afc9a98e3e7c399ea4b6c1e6a2ac42d09bb42466699560e0768aathe hash of its verification record
Needs
no capability: a pure function

Through NOVA’s control layer, the symbol launches this function only while the program still matches what it pins: a change to this graph, or to any graph it reaches, needs a migration first.

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