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Code Issues Releases Wiki Activity

Add untrunc operator, the mirror of trunc (#3994)

This commit is contained in:
Robin Munn 2019-06-17 12:34:30 -05:00 committed by Jeremy Ruston
parent 58cb300a0a
commit 62829dc9d3
5 changed files with 31 additions and 1 deletions
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4
core/modules/filters/math.js
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@ -43,6 +43,10 @@ exports.trunc = makeNumericBinaryOperator(
function(a) {return Math.trunc(a)}
);
exports.untrunc = makeNumericBinaryOperator(
function(a) {return Math.ceil(Math.abs(a)) * Math.sign(a)}
);
exports.sign = makeNumericBinaryOperator(
function(a) {return Math.sign(a)}
);

2
editions/prerelease/tiddlers/Release 5.1.20.tid
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@ -9,7 +9,7 @@ type: text/vnd.tiddlywiki
!! Major Improvements
Added several new [[Mathematics Operators]] for working with numbers: [[negate|negate Operator]], [[abs|abs Operator]], [[ceil|ceil Operator]], [[floor|floor Operator]], [[round|round Operator]], [[trunc|trunc Operator]], [[sign|sign Operator]], [[add|add Operator]], [[subtract|subtract Operator]], [[multiply|multiply Operator]], [[divide|divide Operator]], [[remainder|remainder Operator]], [[max|max Operator]], [[min|min Operator]], [[fixed|fixed Operator]], [[precision|precision Operator]], [[exponential|exponential Operator]], [[sum|sum Operator]], [[product|product Operator]], [[maxall|maxall Operator]] and [[minall|minall Operator]].
Added several new [[Mathematics Operators]] for working with numbers: [[negate|negate Operator]], [[abs|abs Operator]], [[ceil|ceil Operator]], [[floor|floor Operator]], [[round|round Operator]], [[trunc|trunc Operator]], [[untrunc|untrunc Operator]], [[sign|sign Operator]], [[add|add Operator]], [[subtract|subtract Operator]], [[multiply|multiply Operator]], [[divide|divide Operator]], [[remainder|remainder Operator]], [[max|max Operator]], [[min|min Operator]], [[fixed|fixed Operator]], [[precision|precision Operator]], [[exponential|exponential Operator]], [[sum|sum Operator]], [[product|product Operator]], [[maxall|maxall Operator]] and [[minall|minall Operator]].
Added several new string operators: [[length|length Operator]], [[uppercase|uppercase Operator]], [[lowercase|lowercase Operator]], [[trim|trim Operator]], [[split|split Operator]], [[splitregexp|split Operator]] and [[join|join Operator]].

9
editions/tw5.com/tiddlers/filters/examples/untrunc Operator (Examples).tid Normal file
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@ -0,0 +1,9 @@
created: 20190617162921280
modified: 20190617162921280
tags: [[untrunc Operator]] [[Operator Examples]]
title: untrunc Operator (Examples)
type: text/vnd.tiddlywiki
<<.operator-example 1 "[[1.6]untrunc[]]">>
<<.operator-example 2 "[[-1.6]untrunc[]]">>
<<.operator-example 3 "=-1.2 =-2.4 =3.6 =4.8 =5.1 +[untrunc[]]">>

2
editions/tw5.com/tiddlers/filters/trunc Operator.tid
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@ -10,4 +10,6 @@ type: text/vnd.tiddlywiki
<<.from-version "5.1.20">> See [[Mathematics Operators]] for an overview.
<<.tip " The trunc operator rounds towards zero. To round away from zero, use [[untrunc|untrunc Operator]].">>
<<.operator-examples "trunc">>

15
editions/tw5.com/tiddlers/filters/untrunc Operator.tid Normal file
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@ -0,0 +1,15 @@
caption: untrunc
created: 20190617163327756
modified: 20190617163327756
op-input: a [[selection of titles|Title Selection]]
op-output: rounds each of the input numbers to the next integer with largest absolute value, that is, away from zero
op-purpose: rounds a list of numbers to the next integer with largest absolute value, that is, away from zero
tags: [[Unary Mathematics Operators]] [[Filter Operators]] [[Mathematics Operators]]
title: untrunc Operator
type: text/vnd.tiddlywiki
<<.from-version "5.1.20">> See [[Mathematics Operators]] for an overview.
<<.tip " This is the inverse operation of [[trunc|trunc Operator]]: trunc rounds to zero, but untrunc rounds away from zero.">>
<<.operator-examples "untrunc">>