on Windows, perhaps use stricmp (not sure if it's available in plain C)

have look at this thread Creating (scientific) plots via gnuplot

I was not aware of GSL Shell, but as the name implies, it's a an interactive shell giving you easy access to GSL functions, but it's not part of the GSL library. The graphics module in GSL Shell is implemented using the excellent Anti-Grain Geometry library, version 2.5, of Maxim Shemanarev. btw, if...

I am not aware of GSL having any plotting functions, the only examples I have seen use gnuplot to do the plotting.

I think that you need to install the libraries, probably in /usr/local/lib , after installing the libs, you may also need to issue the command:
sudo ldconfig
or you could install the libs in /usr/local/lib/freebasic, but this is not the norm

not tested, try #include once "dislin.bi" METAFL ("CONS") DISINI NAME ("X-axis", "X") NAME ("Y-axis", "Y") TITLIN ("This is a Title", 2) DIM intarr(...) as DISLIN_TYPE = {1,2,3,4,5,6} QPLBAR(@intarr(0), ubound(intarr)+1) END

please test the following program using the FB 32-bit compile command: FreeBASIC-1.06.0-win32\fbc -gen gcc -O 2 -w all nan-test.bas nan-test.bas Dim As Double x, y, t Dim As Integer i Print Print "START TEST #1:"; x = 1.234567 y = 2.345678 t = Timer For i = 1 To 100000000 x = x * y Next t ...

if you are using the 32-bit compiler then it would be to your advantage to test for conditions that may produce a NaN and avoid producing them, the Intel FPU is incredibly slow dealing with NaN's, in 64-bit it's ok, most likely because SSE is used. see https://randomascii.wordpress.com/2012/05/20/th...

if your platform is Windows and you are not concerned with cross platform, then I recommend WinFBE viewtopic.php?f=8&t=25215
it's like Visual Basic, very intuitive.

@badidea
I ran your program from post viewtopic.php?p=262619#p262619 on macOS, it flickers a lot
in line 132, if you place clearscreen(0) after screenlock then it's ok

deltarho[1859] wrote:I also noticed short oblique lines on the screen as if it was raining so something untoward is going on with the graphics.

that I believe is by design, look at the code for rain.

it works poorly on my Windows 10 VM, dragging the red ball it not at all smooth
on the other hand it works smoothly on macOS, however if I drag the red dot around and around, the CPU usage rises to 92%

I accidentally came across this editor VbsEdit, it is commercial product, but there's no time limit on the evaluation version. VbsEdit supports VBScript with syntax coloring, Intellisense, code snippets what I think some of you may find of interest is the nice help file, it's a nice reference to not...

it seem that uninstalling or at least disabling OneDrive is the way to go.
I think it's sync settings https://support.microsoft.com/en-us/hel ... c-settings

I have two virtual machine software products on my Mac, Parallels Desktop and VMware fusion, I have VM's for both now the Windows 10 VM's are all loosing the system sound settings, I noticed that some settings are stored on the cloud, for example the desktop background and I am concerned that some v...