zzmq.dev@gmail.com[dev2]/mathkit[add-lcm-b-function-returns-least-common]public
Add an lcm(a, b) function that returns the least common multiple of two integers, with tests.
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mathkit
Small, dependency-free math utilities
- repo _repo mathkit, bootstrapped by "zzmq.dev@gmail.com[maint]" via `zz work` (remote).
- file index.js Add lcm function with proper export and tests
- file src/isPrime.js Implements and exports isPrime, a function that validates its argument is a finite integer greater than 1 and determines primality by trial division up to the square root, returning true for primes and false otherwise.
- file test/isPrime.test.js Contains node:test unit tests for isPrime, verifying correct true results for known primes, false results for composites, edge cases, negative numbers, zero, one, non‑integers, NaN and infinite values.
- file src/factorial.js Implements a factorial function that validates its numeric input (must be a finite integer ≥ 0) and returns the product of all positive integers up to n, or undefined for invalid inputs, and exports it.
- file test/factorial.test.js Contains unit tests for the factorial function covering base cases (0 and 1), typical positive integers, and ensuring undefined is returned for negative, non‑integer, NaN, or infinite inputs.
- file src/clamp.js Exports a `clamp` function that validates all arguments are finite numbers, swaps the lower and upper bounds if they are provided in reverse order, and returns the input number constrained to the inclusive range or `undefined` when validation fails.
- file test/clamp.test.js Implements a Node.js test suite that verifies `clamp` returns the original value when within bounds, the appropriate bound when the value is out of range, and `undefined` for any non‑numeric or non‑finite inputs.
- file src/median.js Implements a median(numbers) function that validates the input array, ensures all elements are finite numbers, sorts a copy of the array, and returns the median value (or the average of the two middle values for even‑length arrays), returning undefined for invalid or empty inputs.
- file test/median.test.js Contains a Node.js test suite that verifies the median function works for odd and even sized arrays, handles unsorted inputs correctly, and returns undefined for empty arrays or invalid inputs such as non‑arrays, non‑numeric elements, NaN, or Infinity.
- file src/isPerfectSquare.js Implements isPerfectSquare, a function that validates its argument is a finite, integer, non‑negative number and then determines if it is a perfect square by checking whether the square root is an integer, returning true only for valid perfect squares.
- file test/isPerfectSquare.test.js Defines node:test based unit tests for isPerfectSquare, confirming true results for known perfect squares and false results for non‑perfect squares, negative numbers, non‑integer values, and other invalid inputs such as NaN and infinities.
- file src/mean.js Provides a `mean` function that calculates the arithmetic average of an array of numbers, returning NaN for empty arrays or any non‑numeric or non‑finite values.
- file test/mean.test.js Contains a suite of Node.js test cases that verify correct behavior of the `mean` function for typical, edge, and invalid input scenarios.
- file src/gcd.js Provides a `gcd` function that computes the greatest common divisor of two integers using the Euclidean algorithm, handling non‑numeric inputs by returning undefined, normalizing inputs to absolute truncated integers, and correctly returning 0 when both inputs are zero.
- file test/gcd.test.js Contains a test suite for the `gcd` function, covering basic cases, zero handling, negative numbers, and equal inputs, using Node’s built‑in test runner and strict assertions to verify correct behavior.
- file src/lcm.js Add lcm function with proper export and tests
- file test/lcm.test.js Add lcm function with proper export and tests
- changeset changesets/2c53fff83b47376761f4fd403129f6388831860d Added the isPrime utility with export in the package entry point and introduced comprehensive tests to validate its correctness across typical, edge, and invalid inputs.
- filechange changesets/2c53fff83b47376761f4fd403129f6388831860d/index.js Provides the public API of the mathkit package, exporting the sum function and re‑exporting utility functions isOdd, isEven, min, and the newly added isPrime from their respective modules.
- filechange changesets/2c53fff83b47376761f4fd403129f6388831860d/src/isPrime.js Implements and exports isPrime, a function that validates its argument is a finite integer greater than 1 and determines primality by trial division up to the square root, returning true for primes and false otherwise.
- filechange changesets/2c53fff83b47376761f4fd403129f6388831860d/test/isPrime.test.js Contains node:test unit tests for isPrime, verifying correct true results for known primes, false results for composites, edge cases, negative numbers, zero, one, non‑integers, NaN and infinite values.
- changeset changesets/af4e36ae92e0767704bbd290656ca16e88852c31 Added the factorial utility with full validation, exported it from the library entry point, and introduced comprehensive tests to verify correct behavior and edge‑case handling.
- filechange changesets/af4e36ae92e0767704bbd290656ca16e88852c31/index.js Exports the sum utility and re‑exports various math helper functions (isOdd, isEven, min, isPrime, and the newly added factorial) from their respective modules, providing a single entry point for the library.
- filechange changesets/af4e36ae92e0767704bbd290656ca16e88852c31/src/factorial.js Implements a factorial function that validates its numeric input (must be a finite integer ≥ 0) and returns the product of all positive integers up to n, or undefined for invalid inputs, and exports it.
- filechange changesets/af4e36ae92e0767704bbd290656ca16e88852c31/test/factorial.test.js Contains unit tests for the factorial function covering base cases (0 and 1), typical positive integers, and ensuring undefined is returned for negative, non‑integer, NaN, or infinite inputs.
- changeset changesets/bd2d92fe53d96214c784424b08ad85d3aef02b21 Introduces the `clamp` utility with comprehensive input validation and bound handling, and adds corresponding tests to ensure correct behavior across valid, out‑of‑range, and invalid inputs.
- filechange changesets/bd2d92fe53d96214c784424b08ad85d3aef02b21/src/clamp.js Exports a `clamp` function that validates all arguments are finite numbers, swaps the lower and upper bounds if they are provided in reverse order, and returns the input number constrained to the inclusive range or `undefined` when validation fails.
- filechange changesets/bd2d92fe53d96214c784424b08ad85d3aef02b21/index.js Provides top‑level exports for the library’s utilities, including `sum`, `isOdd`, `isEven`, `min`, `isPrime`, `factorial`, and now the newly added `clamp` function from `src/clamp.js`.
- filechange changesets/bd2d92fe53d96214c784424b08ad85d3aef02b21/test/clamp.test.js Implements a Node.js test suite that verifies `clamp` returns the original value when within bounds, the appropriate bound when the value is out of range, and `undefined` for any non‑numeric or non‑finite inputs.
- changeset changesets/c510a7488228271923452e38c5daaa9d4984522c Added a new median utility with full implementation and comprehensive tests, and exported it through the library’s index module.
- filechange changesets/c510a7488228271923452e38c5daaa9d4984522c/index.js Provides the public API for the mathkit library, exporting the sum function and re‑exporting utilities including isOdd, isEven, min, isPrime, factorial, clamp, and the newly added median function.
- filechange changesets/c510a7488228271923452e38c5daaa9d4984522c/src/median.js Implements a median(numbers) function that validates the input array, ensures all elements are finite numbers, sorts a copy of the array, and returns the median value (or the average of the two middle values for even‑length arrays), returning undefined for invalid or empty inputs.
- filechange changesets/c510a7488228271923452e38c5daaa9d4984522c/test/median.test.js Contains a Node.js test suite that verifies the median function works for odd and even sized arrays, handles unsorted inputs correctly, and returns undefined for empty arrays or invalid inputs such as non‑arrays, non‑numeric elements, NaN, or Infinity.
- changeset changesets/8593bb3e0b5c24d5ada25c18e63e25be863710de Added the isPerfectSquare utility with input validation, exported it from the main entry point, and introduced comprehensive tests to verify its correct behavior.
- filechange changesets/8593bb3e0b5c24d5ada25c18e63e25be863710de/index.js Exposes the library’s public API, providing a sum function and re‑exporting various mathematical utilities—including isOdd, isEven, min, isPrime, factorial, clamp, median, and the newly added isPerfectSquare—so consumers can import these helpers directly from the package entry point.
- filechange changesets/8593bb3e0b5c24d5ada25c18e63e25be863710de/src/isPerfectSquare.js Implements isPerfectSquare, a function that validates its argument is a finite, integer, non‑negative number and then determines if it is a perfect square by checking whether the square root is an integer, returning true only for valid perfect squares.
- filechange changesets/8593bb3e0b5c24d5ada25c18e63e25be863710de/test/isPerfectSquare.test.js Defines node:test based unit tests for isPerfectSquare, confirming true results for known perfect squares and false results for non‑perfect squares, negative numbers, non‑integer values, and other invalid inputs such as NaN and infinities.
- changeset changesets/95d776e87fb4bda9a6f00b29b382690c49983b7d Implemented the `mean` arithmetic function with input validation, added comprehensive tests, and exported the function from the main index.
- filechange changesets/95d776e87fb4bda9a6f00b29b382690c49983b7d/src/mean.js Provides a `mean` function that calculates the arithmetic average of an array of numbers, returning NaN for empty arrays or any non‑numeric or non‑finite values.
- filechange changesets/95d776e87fb4bda9a6f00b29b382690c49983b7d/test/mean.test.js Contains a suite of Node.js test cases that verify correct behavior of the `mean` function for typical, edge, and invalid input scenarios.
- filechange changesets/95d776e87fb4bda9a6f00b29b382690c49983b7d/index.js Serves as the library’s public entry point, re‑exporting all utility functions from the `src` directory—including the newly added `mean` function—for external consumption.
- changeset changesets/2e76399025e6749af5719ab2ab993791882a8c00 Added a Euclidean‑algorithm implementation of GCD with comprehensive tests and exported it from the main index, extending the library’s numeric utilities.
- filechange changesets/2e76399025e6749af5719ab2ab993791882a8c00/src/gcd.js Provides a `gcd` function that computes the greatest common divisor of two integers using the Euclidean algorithm, handling non‑numeric inputs by returning undefined, normalizing inputs to absolute truncated integers, and correctly returning 0 when both inputs are zero.
- filechange changesets/2e76399025e6749af5719ab2ab993791882a8c00/test/gcd.test.js Contains a test suite for the `gcd` function, covering basic cases, zero handling, negative numbers, and equal inputs, using Node’s built‑in test runner and strict assertions to verify correct behavior.
- filechange changesets/2e76399025e6749af5719ab2ab993791882a8c00/index.js Serves as the library’s public API entry point, re‑exporting utility functions such as `sum`, `isOdd`, `isEven`, `min`, `isPrime`, `factorial`, `clamp`, `mean`, `median`, `isPerfectSquare`, and now includes the newly added `gcd` function from `src/gcd.js`.
- changeset changesets/d0011d308b740e5e499dfbefd7391b685d912456 Add lcm function with proper export and tests
- filechange changesets/d0011d308b740e5e499dfbefd7391b685d912456/index.js changed.
- filechange changesets/d0011d308b740e5e499dfbefd7391b685d912456/src/lcm.js changed.
- filechange changesets/d0011d308b740e5e499dfbefd7391b685d912456/test/lcm.test.js changed.
- d0011d30 Implement lcm using existing gcd, export from index, and add comprehensive tests zzmq.dev@gmail.com[dev2] 2026-10-15T05:31:50.000Z
- 2e763990 Implement Euclidean algorithm for GCD, add corresponding test suite, and update index exports to include gcd zzmq.dev@gmail.com[dev2] 2026-10-15T05:31:27.000Z
- 95d776e8 Implement mean(numbers) to compute average and expose it zzmq.dev@gmail.com[dev2] 2026-10-15T05:30:55.000Z
- 8593bb3e Add isPerfectSquare utility and corresponding tests zzmq.dev@gmail.com[dev1] 2026-10-15T05:30:37.000Z
- c510a748 Add median utility zzmq.dev@gmail.com[dev3] 2026-10-15T05:29:56.000Z
- bd2d92fe add clamp utility and tests zzmq.dev@gmail.com[dev3] 2026-10-15T05:29:13.000Z
- af4e36ae Add factorial function and export it zzmq.dev@gmail.com[dev3] 2026-10-15T05:28:28.000Z
- 2c53fff8 Add isPrime function and tests zzmq.dev@gmail.com[dev3] 2026-10-15T05:27:18.000Z
- 78934f5a Add min utility and its tests zzmq.dev@gmail.com[dev1] 2026-10-15T05:21:10.000Z
- 38d966a7 Refactor max to delegate to Math.max and extend test suite with NaN, Infinity, and large number cases zzmq.dev@gmail.com[maint] 2026-10-15T04:57:48.000Z
- ce677038 Add unit tests for isEven in test/isEven.test.js zzmq.dev@gmail.com[maint] 2026-10-15T04:48:14.000Z
- d9db29f0 Add tests for the sum function zzmq.dev@gmail.com[maint] 2026-10-15T04:40:01.000Z
- 292ea7c0 Add isEven function zzmq.dev@gmail.com[maint] 2026-10-15T04:34:20.000Z
- 366ed50e Implement isOdd and move tests to dedicated test file zzmq.dev@gmail.com 2026-10-15T04:11:37.000Z
- aa3189e7 Add sum zzmq.dev@gmail.com 2026-10-15T04:07:03.000Z
- 3905d0d8 initial commit zzmq 2026-10-15T04:03:33.000Z
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