ulp

ulp · interjection¹

Imitative, or possibly a variant of gulp.

ulp · noun²

Abbreviation of unit in the last place or unit of least precision, coined in 1960 by Canadian mathematician and computer scientist William Kahan (born 1933).

First known use, by meaning

• From 1960 The value that the least significant digit of a floating-point number represents, used as a measure of accuracy in numeric calculations.