Type real formatting

[LGR]

I'm happy to see the addition of type real. The problem that I have is in formatting real variables into strings for output. As a minimum, there should be a function trunc() which returns the integer portion of the real number. With this, the fractional part can be caculated.

What would be better is to have functions trunc(), frac(), and round(). What would be even better than this, is function real_to_string(). The ultimate would be function real_to_string(), which allows the user to specify places before and after the decimal:

Code: Select all

Const A : byte = 4;
B : byte = 2;
Var C : real; Str : String[10];
Begin
C := 234.32587;
Str := Real_to_string(A,B,C);

Results in str = '234.33'

Conversion the other way would also be nice.