feat:node-modules

node_modules/mathjs/lib/esm/function/algebra/sparse/csCumsum.js

@@ -0,0 +1,28 @@
+// Copyright (c) 2006-2024, Timothy A. Davis, All Rights Reserved.
+// SPDX-License-Identifier: LGPL-2.1+
+// https://github.com/DrTimothyAldenDavis/SuiteSparse/tree/dev/CSparse/Source
+
+/**
+ * It sets the p[i] equal to the sum of c[0] through c[i-1].
+ *
+ * @param {Array}   ptr             The Sparse Matrix ptr array
+ * @param {Array}   c               The Sparse Matrix ptr array
+ * @param {Number}  n               The number of columns
+ */
+export function csCumsum(ptr, c, n) {
+  // variables
+  var i;
+  var nz = 0;
+  for (i = 0; i < n; i++) {
+    // initialize ptr @ i
+    ptr[i] = nz;
+    // increment number of nonzeros
+    nz += c[i];
+    // also copy p[0..n-1] back into c[0..n-1]
+    c[i] = ptr[i];
+  }
+  // finalize ptr
+  ptr[n] = nz;
+  // return sum (c [0..n-1])
+  return nz;
+}