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ProbeLabs36 findings · 123 requirements
SYS-REQ-013SystemReview

When ParseFloat receives a well-formed floating-point number token, the parser shall return the corresponding float64 value.

PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsnone open

Specification

The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.

Description

When ParseFloat receives a well-formed floating-point number token, the parser shall return the corresponding float64 value.

FRETish formula
the parser shall always satisfy !raw_float_token_is_well_formed | returns_parsefloat_value

Rationale & tags

Why this requirement exists, and how it is categorised.

ParseFloat success on valid tokens should be specified independently from malformed-token rejection.

decompositionparsefloat

Verification & provenance

How this requirement was checked: the review trail, edit history, and the machine-analysis status terms (each ⓘ explains what it means).

Assurance levelE
Formalizationvalid
Realizabilityrealizable
Vacuitychecked_ok
Strategyfretish

Review

Status
approved
Reviewer
human:leonidbugaev
Reviewed
Apr 23, 2026, 00:00 UTC

History

Created
Apr 13, 2026, 17:21 UTC · human:cli
Modified
Apr 14, 2026, 15:45 UTC · agent:codex

Obligations

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No obligations recorded for this requirement

Proof obligations are recorded once evidence is generated. None have been captured here yet — this is expected, not a gap in the requirement itself. A required class of evidence the requirement must witness — the bridge between the requirement existing and it being proven.

Formula evidence

The formal formula behind this requirement, the variables it is written over, and the tests that exercise it (each term is explained inline).

FRETish formula

the parser shall always satisfy !raw_float_token_is_well_formed | returns_parsefloat_value

Variables

NameTypeDirectionDescription
raw_float_token_is_well_formedTrue when ParseFloat receives a well-formed floating-point number token.
returns_parsefloat_valueTrue when ParseFloat returns the corresponding float64 value.

Witnesses· 3 scenarios total

  • FuzzParseFloatNative
    fuzz_native_test.go:152
  • TestMCDC_SYS_REQ_013_Row1_TriggerFalse
    mcdc_spec_witnesses_test.go:283exercises 1 condition scenario
  • TestParseFloat
    parser_test.go:2235exercises 2 condition scenarios
  • TestFuzzParseFloatHarnessCoverage
    parser_test.go:2254
  • TestOracleParseFloat
    reference_oracle_test.go:819

Its place

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Trace evidence

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Impact

Blast radius — if you change this requirement, what else may need re-checking, and what it in turn depends on.

If you change this

Requirements
0
Files
2
Tests
4
At-risk contracts
0

Files to re-check (2)

  • fuzz.gofuzz.go
  • parser.goparser.go

Tests to re-run (4)

  • fuzz_native_test.gofuzz_native_test.go
  • mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
  • parser_test.goparser_test.go
  • reference_oracle_test.goreference_oracle_test.go

What this rests on

Discussions

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