ulp — Słownik języka angielskiego

Wykrzyknik

1. The sound of a person gulping in fear.

   Synonimy

   gulp

   Przykłady

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   I sent her a text asking as nonchalantly as possible whether cows ever go for you. [...] The answer I got was, 'Occasionally they do, and they can be bloody scary.' Ulp.

   And where would the Grammys be without Motown maverick Stevie Wonder, continuing his slide into musical irrelevance with a mind-boggling collaboration with, ulp, teen idols the Jonas Brothers, who massacred their own "Burnin' Up" and Stevie's "Superstition" with boyish aplomb.

   Little—ulp—little red horns curving out of his brow. My mouth was totally dry.

Rzeczownik

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

   Przykłady

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   The basic concept of two vectors "agreeing to k ulps" (units in the last place) of each entry or of the largest entry allows us to express relationships among computed values and solutions at perturbed data.

   Floating point operations are correct to within half an ulp, and the calculation of uvw by two floating point multiplications will be correct within about one ulp (ignoring second-order terms).

   The difference between two consecutive machine numbers is called an ulp (unit in the last place, i.e., one digit in the least significant place). The size of an ulp varies depending on where you are in the set of machine numbers. [...] Ideally no function should ever return a result with error exceeding half of an ulp since the distance from the true result to the nearest machine number is always less than half of an ulp, the worst case being when it is exactly halfway between two machine numbers.

   If, instead of considering ulps of the "exact" value x, we consider ulps of the floating-point value X, we have a property that is very similar to Property 2, with the interesting difference that it now holds for any value of the radix.