Declaring Variables

[bottomleypotts]

I have a need to read through a file greater that 3Gb.

Code (winbatch) Select Expand

a=Int64(2999947537)

x=500000000

For i=0 to a-1 by x
; do something
Next i


I know that I will have to do this as a while loop, but it would be nice to be able to explicitly declare i as an int64. Can anyone think of a way to do this?

[stanl]

Not sure I understand what is being read but you might want to look into WB's BinaryReadEx() function with this parameter


file-offset: zero-based offset into the file specifying where the data to be read starts. This parameter accepts a huge number or a 64-bit integer data type.

[bottomleypotts]

Stan, run the code. My issue is i is an integer and ends up being negative.

[JTaylor]

Will ObjectType() do what you need?

Jim

[stanl]

Stan, run the code. My issue is i is an integer and ends up being negative.

Sorry, it was early in the morning and I was more focused on how a large file could be read, but for variable assignment, Jim's suggestion is probably correct.

[bottomleypotts]

No need to apologize Stan. I appreciate any and all help!

ObjectType() allows me to set a variable, but as soon as I create a for ... loop, the variable is reconfigured as an integer.

Appears as if a while ... loop is the only way to do this.

[JTaylor]

Didn't the previous WinBatch release provide what you need?   Trying to remember...there was something about 64bit integers.

Jim

[JTaylor]

Are you using version 2021C?  If not, look under the Beta section of the forum and read the description there and see if it is what you need.

Jim

[bottomleypotts]

Yes Jim, you are correct. I can initialize a variable with the Int64() function, and then increase it in a while ... loop.

[td]

I have a need to read through a file greater that 3Gb.

Code (winbatch) Select Expand

a=Int64(2999947537)

x=500000000

For i=0 to a-1 by x
; do something
Next i


I know that I will have to do this as a while loop, but it would be nice to be able to explicitly declare i as an int64. Can anyone think of a way to do this?

This works assuming 2021C. Is this what you want?

Code (winbatch) Select Expand

For i=Int64(0) to a-1 by x
; do something
Next


In the above example variable "i" is a 64-bit integer which then works as a loop control variable.

[bottomleypotts]

This is exactly what I wanted. Thanks Tony.