simon-git: spigot (master): Simon Tatham

[Commits to Tartarus hosted VCS]

TL;DR:
  1573a63 Add the sign function.

Repository:     https://git.tartarus.org/simon/spigot.git
On the web:     https://git.tartarus.org/?p=simon/spigot.git
Branch updated: master
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2017-03-18 18:51:58

commit 1573a63a3027af604aeaecaf7857dead1ab5246c
web diff https://git.tartarus.org/?p=simon/spigot.git;a=commitdiff;h=1573a63a3027af604aeaecaf7857dead1ab5246c;hp=02cd6ee8679175eac06f46306ac50761e040528b
Author: Simon Tatham <anakin at pobox.com>
Date:   Sat Mar 18 18:43:46 2017 +0000

    Add the sign function.
    
    A user asked for it just now. It's not the most useful thing ever,
    because (apart from obvious cases like rationals) it will find it
    difficult to ever return zero; but since I provide the same function
    in the Python module, that doesn't seem like a good reason not to add
    it anyway for the sake of the situations it _is_ useful in.

 expr.cpp    |  1 +
 funcs.h     |  1 +
 manpage.but |  6 ++++++
 manual.but  |  5 +++++
 test.sh     |  5 +++++
 unary.cpp   | 11 +++++++++++
 6 files changed, 29 insertions(+)