e constant

[thedavidmeister]

Motivation

Solution

Checks

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Summary by CodeRabbit

• New Features

  • Added support for the mathematical constant "e" as a new opcode across the platform.
  • Enabled related metadata, operand handling, integrity checks, and execution for the "e" opcode.

• Tests

  • Activated tests for the new "e" opcode to ensure correct integrity logic and behavior.

• Chores

  • Updated gas and performance snapshot data to reflect recent changes and additions.

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📥 Commits

Reviewing files that changed from the base of the PR and between 26b54a9 and d27f380.

⛔ Files ignored due to path filters (3)

• src/generated/Rainterpreter.pointers.sol is excluded by !**/generated/**
• src/generated/RainterpreterExpressionDeployer.pointers.sol is excluded by !**/generated/**
• src/generated/RainterpreterParser.pointers.sol is excluded by !**/generated/**

📒 Files selected for processing (6)

• .gas-snapshot (2 hunks)
• src/lib/op/LibAllStandardOps.sol (11 hunks)
• src/lib/op/math/LibOpMaxValue.sol (1 hunks)
• src/lib/op/math/LibOpMinValue.sol (1 hunks)
• test/src/lib/op/math/LibOpMaxValue.t.sol (1 hunks)
• test/src/lib/op/math/LibOpMinValue.t.sol (1 hunks)

Walkthrough

This change activates and fully integrates the "e" mathematical constant opcode into the standard operations library. It updates function signatures and stack handling in LibOpE to use a strongly typed decimal float, adds the opcode to all relevant arrays in LibAllStandardOps, and enables the associated test contract. Gas snapshot and submodule references are also updated.

Changes

File(s)	Change Summary
.gas-snapshot	Updated gas usage and test run metrics to reflect recent codebase or environment changes; new entries for LibOpE-related tests.
lib/rain.interpreter.interface	Updated submodule commit reference.
src/lib/op/LibAllStandardOps.sol	Activated "e" opcode: incremented opcode count, added metadata, and included function pointers for integrity, operand, and execution.
src/lib/op/math/LibOpE.sol	Switched to decimal float representation for "e", updated function signatures, stack handling, and enabled previously commented code.
test/src/lib/op/math/LibOpE.t.sol	Uncommented and enabled the LibOpETest contract and its integrity and runtime tests with updated operand and stack item types.

Sequence Diagram(s)

sequenceDiagram
    participant Test as LibOpETest
    participant LibAllStandardOps
    participant LibOpE
    participant Stack

    Test->>LibAllStandardOps: Retrieve opcode metadata/function pointers
    Test->>LibOpE: Call integrity(state, operandV2)
    LibOpE-->>Test: Return (inputs=0, outputs=1)
    Test->>LibOpE: Call run(state, operandV2, stackTop)
    LibOpE->>Stack: Push FLOAT_E onto stack
    LibOpE-->>Test: Return new stackTop

Loading

Estimated code review effort

3 (~40 minutes)

Possibly related PRs

• inv op #374: Activates and updates the "inv" opcode with floating-point support, following a similar pattern to the "e" opcode integration in this PR.
• 2025 07 12 mul #355: Activates and updates the "mul" opcode with analogous structural changes to those for the "e" opcode in this PR.
• bump up rain.interpreter.interface #363: Updates the lib/rain.interpreter.interface subproject commit reference, similar to the submodule update in this PR.

Suggested reviewers

• findolor
• hardyjosh

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