EVAL on raspberry PI4

[alexfish]

HI All

EVAL not Working

NEED to install libmatheval-dev

sudo apt install libmatheval-dev

then example will compile

OPTION EVAL TRUE
DECLARE x, y TYPE FLOATING
x = 3
y = 4
nr = 5
PRINT EVAL("x*x + y +" & STR$(nr) & " + 6")

BR
Alex

[Pjot]

Hi Alex,

The documentation for EVAL says "This function relies on the presence of the 'libmatheval' library on the compiling platform."

This indicates that you indeed must install an external package.

I will narrow it down to the remark that the development files for 'libmatheval' are required.

BR
Peter

[alexfish]

Thanks Peter

as a side note
one can prefix the method with a single string
my help in tracking what the actual bit relates to

IE

OPTION EVAL TRUE
DECLARE x, y TYPE FLOATING
x = 3
y = 4
nr = 5
PRINT EVAL("My_Cost" "x*x + y +" & STR$(nr) & " + 6")

BR
Alex