This could take place when a numeric field is to be used in a SQL statement, but the programmer makes no checks to validate that the user supplied input is numeric.

Some embedded systems and other computer applications may need numerical integration for this reason.

In power engineering, the power flow study, or load flow study, is a numerical analysis of the flow of electric power in an interconnected system.

Computational science (also scientific computing or scientific computation) is concerned with constructing mathematical models and quantitative analysis techniques and using computers to analyze and solve scientific problems.

A functional depends on a function, somewhat analogous to the way a function can depend on a numerical variable, and thus a functional has been described as a function of a function.

Thus a variable's type can vary with its use in the program Compound variables Unlike many other programming languages, classic Rexx has no direct support for arrays of variables addressed by a numerical index.

The InChI algorithm converts input structural information into a unique InChI identifier in a three step process normalization (to remove redundant information), canonicalization (to generate a unique number label for each atom), and serialization (to give a string of characters).