Fix colormap functions when N is not of class double (bug #44070) * autumn.m, bone.m, cool.m, copper.m, cubehelix.m, gray.m, hsv.m, ocean.m, rainbow.m, spring.m, summer.m, winter.m: cast N to double since in this colormap functions, N is used directly used in the operations and ends up casting colormap to something else. Note that a colormap MUST be of class double. Also, if N is an integer class, all values in colormap end up 0 or 1. Also simplify code for input checking by declaring default on function signature line. * flag.m, gmap40.m, hot.m, jet.m, lines.m, pink.m, prism.m, white.m: simplify input check like the other colormap functions. * test/colormaps.tst: add new test file to test all colormaps at once. * test/Makefile.am: add new test file to build system. used to create the colormap and if less

## System-wide startup file for Octave.
##
## This file should contain any commands that should be executed each
## time Octave starts for every user at this site.

## Configure readline using the file inputrc in the Octave startup
## directory.

readline_read_init_file (sprintf ("%s%s%s",
                                  octave_config_info ("startupfiledir"),
                                  filesep, "inputrc"));

if (strcmp (PAGER (), "less") && isempty (getenv ("LESS")))
  PAGER_FLAGS ('-e -X -P"-- less ?pB(%pB\\%):--. (f)orward, (b)ack, (q)uit$"');
endif

## This appears here instead of in the pkg/PKG_ADD file so that --norc
## will also skip automatic loading of packages.

pkg ("load", "auto");

atexit ("__finish__");