refactor(packages/stdlib): separate math utils штещ basic and bigint versions

packages/stdlib/src/math/basic/remap/index.test.ts

@@ -0,0 +1,46 @@
+import {describe, expect, it} from 'vitest';
+import {remap} from './index';
+
+describe('remap', () => {
+  it('map values from one range to another', () => {
+    // value at midpoint
+    expect(remap(5, 0, 10, 0, 100)).toBe(50);
+
+    // value at min
+    expect(remap(0, 0, 10, 0, 100)).toBe(0);
+
+    // value at max
+    expect(remap(10, 0, 10, 0, 100)).toBe(100);
+
+    // value outside range (below)
+    expect(remap(-5, 0, 10, 0, 100)).toBe(0);
+
+    // value outside range (above)
+    expect(remap(15, 0, 10, 0, 100)).toBe(100);
+
+    // value at midpoint of negative range
+    expect(remap(75, 50, 100, -50, 50)).toBe(0);
+
+    // value at midpoint of negative range
+    expect(remap(-25, -50, 0, 0, 100)).toBe(50);
+  });
+
+  it('handle floating-point numbers correctly', () => {
+    // floating-point value
+    expect(remap(3.5, 0, 10, 0, 100)).toBe(35);
+
+    // positive floating-point ranges
+    expect(remap(1.25, 0, 2.5, 0, 100)).toBe(50);
+
+    // negative floating-point value
+    expect(remap(-2.5, -5, 0, 0, 100)).toBe(50);
+
+    // negative floating-point ranges
+    expect(remap(-1.25, -2.5, 0, 0, 100)).toBe(50);
+  });
+
+  it('handle edge cases', () => {
+    // input range is zero (should return output min)
+    expect(remap(5, 0, 0, 0, 100)).toBe(0);
+  });
+});