X-Git-Url: https://git.ladys.computer/Pisces/blobdiff_plain/5af99cb7def7f5a9b19db6a8e214920dd233113d..6e6d4e3261c1c943fe44fa9e381bcf8bf1441fd6:/numeric.test.js?ds=sidebyside

diff --git a/numeric.test.js b/numeric.test.js
index e82e04b..27776cd 100644
--- a/numeric.test.js
+++ b/numeric.test.js
@@ -19,15 +19,33 @@ import {
   clz32,
   max,
   min,
+  NEGATIVE_ZERO,
+  POSITIVE_ZERO,
   sgn,
   toBigInt,
+  toExponentialNotation,
+  toFixedDecimalNotation,
   toFloat32,
+  toIntegralNumber,
+  toIntegralNumberOrInfinity,
   toIntN,
   toNumber,
   toNumeric,
   toUintN,
 } from "./numeric.js";
 
+describe("NEGATIVE_ZERO", () => {
+  it("[[Get]] is negative zero", () => {
+    assertStrictEquals(NEGATIVE_ZERO, -0);
+  });
+});
+
+describe("POSITIVE_ZERO", () => {
+  it("[[Get]] is positive zero", () => {
+    assertStrictEquals(POSITIVE_ZERO, 0);
+  });
+});
+
 describe("abs", () => {
   it("[[Call]] returns the absolute value", () => {
     assertStrictEquals(abs(-1), 1);
@@ -125,6 +143,53 @@ describe("toBigInt", () => {
   });
 });
 
+describe("toExponentialNotation", () => {
+  it("[[Call]] converts to exponential notation", () => {
+    assertStrictEquals(toExponentialNotation(231), "2.31e+2");
+  });
+
+  it("[[Call]] works with big·ints", () => {
+    assertStrictEquals(
+      toExponentialNotation(9007199254740993n),
+      "9.007199254740993e+15",
+    );
+  });
+
+  it("[[Call]] respects the specified number of fractional digits", () => {
+    assertStrictEquals(
+      toExponentialNotation(.00000000642, 3),
+      "6.420e-9",
+    );
+    assertStrictEquals(toExponentialNotation(.00691, 1), "6.9e-3");
+    assertStrictEquals(toExponentialNotation(.00685, 1), "6.9e-3");
+    assertStrictEquals(toExponentialNotation(.004199, 2), "4.20e-3");
+    assertStrictEquals(
+      toExponentialNotation(6420000000n, 3),
+      "6.420e+9",
+    );
+    assertStrictEquals(toExponentialNotation(6910n, 1), "6.9e+3");
+    assertStrictEquals(toExponentialNotation(6850n, 1), "6.9e+3");
+    assertStrictEquals(toExponentialNotation(4199n, 2), "4.20e+3");
+  });
+});
+
+describe("toFixedDecimalNotation", () => {
+  it("[[Call]] converts to fixed decimal notation", () => {
+    assertStrictEquals(toFixedDecimalNotation(69.4199, 3), "69.420");
+  });
+
+  it("[[Call]] works with big·ints", () => {
+    assertStrictEquals(
+      toFixedDecimalNotation(9007199254740993n),
+      "9007199254740993",
+    );
+    assertStrictEquals(
+      toFixedDecimalNotation(9007199254740993n, 2),
+      "9007199254740993.00",
+    );
+  });
+});
+
 describe("toFloat32", () => {
   it("[[Call]] returns the 32‐bit floating‐point representation", () => {
     assertStrictEquals(
@@ -149,6 +214,66 @@ describe("toIntN", () => {
   it("[[Call]] works with numbers", () => {
     assertStrictEquals(toIntN(2, 7), -1);
   });
+
+  it("[[Call]] works with non‐integers", () => {
+    assertStrictEquals(toIntN(2, 7.21), -1);
+    assertStrictEquals(toIntN(2, Infinity), 0);
+  });
+});
+
+describe("toIntegralNumber", () => {
+  it("[[Call]] converts nan to zero", () => {
+    assertStrictEquals(toIntegralNumber(NaN), 0);
+  });
+
+  it("[[Call]] converts negative zero to positive zero", () => {
+    assertStrictEquals(toIntegralNumber(-0), 0);
+  });
+
+  it("[[Call]] drops the fractional part of negative numbers", () => {
+    assertStrictEquals(toIntegralNumber(-1.79), -1);
+  });
+
+  it("[[Call]] returns zero for infinity", () => {
+    assertStrictEquals(toIntegralNumber(Infinity), 0);
+  });
+
+  it("[[Call]] returns zero for negative infinity", () => {
+    assertStrictEquals(toIntegralNumber(-Infinity), 0);
+  });
+
+  it("[[Call]] works with big·ints", () => {
+    assertStrictEquals(toIntegralNumber(2n), 2);
+  });
+});
+
+describe("toIntegralNumberOrInfinity", () => {
+  it("[[Call]] converts nan to zero", () => {
+    assertStrictEquals(toIntegralNumberOrInfinity(NaN), 0);
+  });
+
+  it("[[Call]] converts negative zero to positive zero", () => {
+    assertStrictEquals(toIntegralNumberOrInfinity(-0), 0);
+  });
+
+  it("[[Call]] drops the fractional part of negative numbers", () => {
+    assertStrictEquals(toIntegralNumberOrInfinity(-1.79), -1);
+  });
+
+  it("[[Call]] returns infinity for infinity", () => {
+    assertStrictEquals(toIntegralNumberOrInfinity(Infinity), Infinity);
+  });
+
+  it("[[Call]] returns negative infinity for negative infinity", () => {
+    assertStrictEquals(
+      toIntegralNumberOrInfinity(-Infinity),
+      -Infinity,
+    );
+  });
+
+  it("[[Call]] works with big·ints", () => {
+    assertStrictEquals(toIntegralNumberOrInfinity(2n), 2);
+  });
 });
 
 describe("toNumber", () => {
@@ -189,4 +314,9 @@ describe("toUintN", () => {
   it("[[Call]] works with numbers", () => {
     assertStrictEquals(toUintN(2, 7), 3);
   });
+
+  it("[[Call]] works with non‐integers", () => {
+    assertStrictEquals(toUintN(2, 7.21), 3);
+    assertStrictEquals(toUintN(2, Infinity), 0);
+  });
 });