Two methods of obtaining the larger of two numbers

[Joe Caverly]

I wanted to calculate the start line,
given a line number.

If the line number subtract 3 is less than 1,
then the start line is 1.

Here's how I did this using TCC internal functions;

R:\>set linenumber=1422

R:\>set startLine=%@max[1,%@eval[%LineNumber-3]]

R:\>echo %startline
1419

R:\>set linenumber=2

R:\>set startLine=%@max[1,%@eval[%LineNumber-3]]

R:\>echo %startline
1

The .NET Framework provides another solution,
using the .NET Framework Math class,
which can be accessed from TCC;

R:\>which psc
psc is an alias : pshell /s %@quote[%$]

R:\>set linenumber=1422

R:\>psc $env:startLine = [Math]::Max(1, $env:LineNumber - 3)

R:\>echo %startline
1419

R:\>set linenumber=2

R:\>psc $env:startLine = [Math]::Max(1, $env:LineNumber - 3)

R:\>echo %startline
1

Ref: Math.Max Method (System)

Joe