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[Octave-bug-tracker] [bug #56609] rand(n) accepts non-integral (n)
From: |
Rik |
Subject: |
[Octave-bug-tracker] [bug #56609] rand(n) accepts non-integral (n) |
Date: |
Thu, 11 Jul 2019 11:22:42 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko |
Update of bug #56609 (project octave):
Status: None => Confirmed
Release: 5.1.0 => dev
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Follow-up Comment #1:
Matlab used to be quite loose about input validation and so Octave copied that
behavior for rand. Also note that this looseness is only present when there
is a single dimension argument. If more than one dimension is specified then
they must all be non-negative integers. For example,
rand (1.5, 3)
error: rand: conversion of 1.5 to int64_t value failed
The code to change is in rand.cc at line 171.
else if (tmp.is_scalar_type ())
{
double dval = tmp.double_value ();
if (octave::math::isnan (dval))
error ("%s: NaN is invalid matrix dimension", fcn);
dims.resize (2);
dims(0) = dims(1) = octave::math::nint_big (dval);
goto gen_matrix;
}
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