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[Octave-bug-tracker] [bug #53232] Range type should implement element-by
From: |
Rik |
Subject: |
[Octave-bug-tracker] [bug #53232] Range type should implement element-by-element multiplication operator with a scalar |
Date: |
Mon, 26 Feb 2018 20:50:48 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
URL:
<http://savannah.gnu.org/bugs/?53232>
Summary: Range type should implement element-by-element
multiplication operator with a scalar
Project: GNU Octave
Submitted by: rik5
Submitted on: Mon 26 Feb 2018 05:50:47 PM PST
Category: Interpreter
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Feature Request
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: Any
_______________________________________________________
Details:
The Range class already implements addition, subtraction, and multiplication
operators with a scalar. And it implements the corresponding
element-by-elment operators for addition (.+) and subtraction (.-). But it
does not implement element-by-elment multiplication.
For example:
octave:2> x = 1:5
x =
1 2 3 4 5
octave:3> typeinfo (x)
ans = range
octave:4> y = x * 2
y =
2 4 6 8 10
octave:5> typeinfo (y)
ans = range
octave:6> z = x .* 2
z =
2 4 6 8 10
octave:7> typeinfo (z)
ans = matrix
octave:2> x = 1:5
x =
1 2 3 4 5
octave:3> typeinfo (x)
ans = range
octave:4> y = x * 2
y =
2 4 6 8 10
octave:5> typeinfo (y)
ans = range
octave:6> z = x .* 2
z =
2 4 6 8 10
octave:7> typeinfo (z)
ans = matrix
octave:2> x = 1:5
x =
1 2 3 4 5
octave:3> typeinfo (x)
ans = range
octave:4> y = x * 2
y =
2 4 6 8 10
octave:5> typeinfo (y)
ans = range
octave:6> z = x .* 2
z =
2 4 6 8 10
octave:7> typeinfo (z)
ans = matrix
octave:2> x = 1:5
x =
1 2 3 4 5
octave:3> typeinfo (x)
ans = range
octave:4> y = x * 2
y =
2 4 6 8 10
octave:5> typeinfo (y)
ans = range
octave:6> z = x .* 2
z =
2 4 6 8 10
octave:7> typeinfo (z)
ans = matrix
This seems like an oversight and should be easy to fix as the
element-by-element operator should just map to the same routine that ordinary
multiplication is using.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?53232>
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- [Octave-bug-tracker] [bug #53232] Range type should implement element-by-element multiplication operator with a scalar,
Rik <=