Programming-Idioms

History of Idiom 81 > diff from v8 to v9

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Version 8

2015-09-05, 17:12:13

Version 9

2015-09-05, 17:12:29

Idiom #81 Round floating point number to integer

Declare integer y and initialize it with the rounded value of floating point number x .
Ties (when the fractional part of x is exactly _.5) must be rounded up (to positive infinity).

Idiom #81 Round floating point number to integer

Declare integer y and initialize it with the rounded value of floating point number x .
Ties (when the fractional part of x is exactly _.5) must be rounded up (to positive infinity).

Haskell

Haskell

Code

y = floor (x + 1/2)

Code

y = floor (x + 1/2)

Comments bubble

Haskell would round half-ties towards nearest ∈ℤ2 rather than +∞

Comments bubble

Haskell would round half-ties towards nearest ∈ℤ2 rather than towards +∞

Doc URL

http://hackage.haskell.org/package/base/docs/Prelude.html#v:floor

Doc URL

http://hackage.haskell.org/package/base/docs/Prelude.html#v:floor

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History of Idiom 81 > diff from v8 to v9

Version 8

Version 9

Idiom #81 Round floating point number to integer

Idiom #81 Round floating point number to integer

Code

Code

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Doc URL

Doc URL

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