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Feature Request

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Subject: Feature Request
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by: Kazuya Ito - Wed, 23 Mar 2022 08:55 UTC

Re: Feature Request

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by: Michael F. Stemper - Wed, 23 Mar 2022 13:44 UTC

On 23/03/2022 03.55, Kazuya Ito wrote:
> Add "trun()" function to Python to truncate decimal part.

Which of these should its behavior copy?

>>> from math import pi
>>> int(pi)
3 >>> pi-int(pi)
0.14159265358979312
>>>

--
Michael F. Stemper
This post contains greater than 95% post-consumer bytes by weight.

Re: Feature Request

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From: wlfr...@ix.netcom.com (Dennis Lee Bieber)
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Subject: Re: Feature Request
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by: Dennis Lee Bieber - Wed, 23 Mar 2022 15:55 UTC

On Wed, 23 Mar 2022 01:55:37 -0700 (PDT), Kazuya Ito
<kazya.ito.dream@gmail.com> declaimed the following:

>Add "trun()" function to Python to truncate decimal part.

You'll have to define what specific behavior you think is missing from
the currently available functions?

>>> plusover = 2.78
>>> plusunder = 3.14
>>> minusover = -2.78
>>> minusunder = -3.14
>>> import math
>>> for v in (plusover, plusunder, minusover, minusunder):
.... print("%s: int %s, round %s, math.trunc %s, math.floor %s,
math.ceil %s"
.... % (v, int(v), round(v), math.trunc(v), math.floor(v),
math.ceil(v)))
....
2.78: int 2, round 3, math.trunc 2, math.floor 2, math.ceil 3
3.14: int 3, round 3, math.trunc 3, math.floor 3, math.ceil 4
-2.78: int -2, round -3, math.trunc -2, math.floor -3, math.ceil -2
-3.14: int -3, round -3, math.trunc -3, math.floor -4, math.ceil -3
>>>

int() and .trunc() move toward 0, .floor() moves to less positive,
..ceil() moves to more positive.

--
Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com http://wlfraed.microdiversity.freeddns.org/

No one wants war. -- Kirk, "Errand of Mercy", stardate 3201.7

devel / comp.lang.python / Feature Request

Subject	Author
Feature Request	Kazuya Ito
Re: Feature Request	Michael F. Stemper
Re: Feature Request	Dennis Lee Bieber