https://nalar.dev/tags/numerical-computing/ Recent content in Numerical Computing on Nalar Hugo en-us Thu, 03 Sep 2026 00:00:00 +0700 https://nalar.dev/use-decimal-for-predictable-base-10-arithmetic-in-python/ Thu, 03 Sep 2026 00:00:00 +0700 https://nalar.dev/use-decimal-for-predictable-base-10-arithmetic-in-python/ <p>Many Python programs can use <code>float</code> without trouble. Measurements, graphics, statistics, and scientific calculations often benefit from fast binary floating-point arithmetic.</p> <p>Problems appear when the data itself is defined in decimal terms and exact decimal values matter. A price such as <code>19.99</code>, a tax rate such as <code>7.5%</code>, or a quantity rounded to two decimal places may need rules that match decimal arithmetic rather than the binary representation used by <code>float</code>.</p>