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node_modules/tstl/numeric/operations.js

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+"use strict";
+var __read = (this && this.__read) || function (o, n) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator];
+    if (!m) return o;
+    var i = m.call(o), r, ar = [], e;
+    try {
+        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+    }
+    catch (error) { e = { error: error }; }
+    finally {
+        try {
+            if (r && !r.done && (m = i["return"])) m.call(i);
+        }
+        finally { if (e) throw e.error; }
+    }
+    return ar;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.transform_exclusive_scan = exports.transform_inclusive_scan = exports.exclusive_scan = exports.inclusive_scan = exports.partial_sum = exports.adjacent_difference = exports.inner_product = exports.accumulate = exports.iota = exports.lcm = exports.gcd = void 0;
+var operators_1 = require("./operators");
+/**
+ * Greatest Common Divider.
+ */
+function gcd(x, y) {
+    var _a;
+    y = y.valueOf(); // `Number` to `number`
+    while (y !== 0)
+        _a = __read([y, x % y], 2), x = _a[0], y = _a[1];
+    return x;
+}
+exports.gcd = gcd;
+/**
+ * Least Common Multiple.
+ */
+function lcm(x, y) {
+    return (x * y) / gcd(x, y);
+}
+exports.lcm = lcm;
+/* ---------------------------------------------------------
+    COMMON ALGORITHMS
+--------------------------------------------------------- */
+function iota(first, last, value) {
+    for (; !first.equals(last); first = first.next())
+        first.value = value++;
+}
+exports.iota = iota;
+function accumulate(first, last, init, op) {
+    if (op === void 0) { op = operators_1.plus; }
+    for (; !first.equals(last); first = first.next())
+        init = op(init, first.value);
+    return init;
+}
+exports.accumulate = accumulate;
+function inner_product(first1, last1, first2, value, adder, multiplier) {
+    if (adder === void 0) { adder = operators_1.plus; }
+    if (multiplier === void 0) { multiplier = operators_1.multiplies; }
+    for (; !first1.equals(last1); first1 = first1.next()) {
+        value = adder(value, multiplier(first1.value, first2.value));
+        first2 = first2.next();
+    }
+    return value;
+}
+exports.inner_product = inner_product;
+function adjacent_difference(first, last, output, subtracter) {
+    var _a;
+    if (subtracter === void 0) { subtracter = operators_1.minus; }
+    if (first.equals(last))
+        return output;
+    // INITIALIZE
+    var before;
+    _a = __read(_Initialize(first, output), 3), first = _a[0], output = _a[1], before = _a[2];
+    // COMPUTE OPERATIONS
+    for (; !first.equals(last); first = first.next()) {
+        output.value = subtracter(first.value, before);
+        before = first.value;
+        output = output.next();
+    }
+    return output;
+}
+exports.adjacent_difference = adjacent_difference;
+function partial_sum(first, last, output, adder) {
+    var _a;
+    if (adder === void 0) { adder = operators_1.plus; }
+    if (first.equals(last))
+        return output;
+    // INITIALIZE
+    var sum;
+    _a = __read(_Initialize(first, output), 3), first = _a[0], output = _a[1], sum = _a[2];
+    // COMPUTE OPERATIONS
+    for (; !first.equals(last); first = first.next()) {
+        sum = adder(sum, first.value);
+        output.value = sum;
+        output = output.next();
+    }
+    return output;
+}
+exports.partial_sum = partial_sum;
+/* ---------------------------------------------------------
+    PREFIX SUMS
+--------------------------------------------------------- */
+function inclusive_scan(first, last, output, adder, init) {
+    if (adder === void 0) { adder = operators_1.plus; }
+    return transform_inclusive_scan(first, last, output, adder, function (val) { return val; }, init);
+}
+exports.inclusive_scan = inclusive_scan;
+function exclusive_scan(first, last, output, init, op) {
+    if (op === void 0) { op = operators_1.plus; }
+    return transform_exclusive_scan(first, last, output, init, op, function (val) { return val; });
+}
+exports.exclusive_scan = exclusive_scan;
+function transform_inclusive_scan(first, last, output, binary, unary, init) {
+    var _a;
+    if (first.equals(last))
+        return output;
+    // INITIALIZE
+    var before;
+    _a = __read(_Transform_initialize(first, output, unary, init), 3), first = _a[0], output = _a[1], before = _a[2];
+    // COMPUTE OPERATIONS
+    for (; !first.equals(last); first = first.next()) {
+        before = binary(before, unary(first.value));
+        output.value = before;
+        output = output.next();
+    }
+    return output;
+}
+exports.transform_inclusive_scan = transform_inclusive_scan;
+function transform_exclusive_scan(first, last, output, init, binary, unary) {
+    var _a;
+    if (first.equals(last))
+        return output;
+    // INITIALIZE
+    var x = unary(first.value);
+    var y;
+    _a = __read(_Transform_initialize(first, output, unary, init), 3), first = _a[0], output = _a[1], y = _a[2];
+    // COMPUTE OPERATIONS
+    for (; !first.equals(last); first = first.next()) {
+        y = binary(x, y);
+        x = unary(first.value);
+        output.value = y;
+        output = output.next();
+    }
+    return output;
+}
+exports.transform_exclusive_scan = transform_exclusive_scan;
+function _Initialize(first, output, init) {
+    return _Transform_initialize(first, output, function (val) { return val; }, init);
+}
+function _Transform_initialize(first, output, unary, init) {
+    // WRITE THE FIRST OR INITIAL VALUE
+    var ret = unary(init === undefined ? first.value : init);
+    output.value = ret;
+    // RETURNS WITH ADVANCES
+    return [first.next(), output.next(), ret];
+}
+//# sourceMappingURL=operations.js.map