Rslogix Copy Int To Two Bytes

P: n/a

Fore wrote:

On 11 Sep, 21:31, red floyd <redfl...@gmail.comwrote:

>On Sep 11, 12:56 pm, Fore <brian.william...@blueyonder.co.ukwrote:

>>Hello
I am looking for some effecient way to convert a 32 bit unsigned
integer to a 16 bit signed integer. All I want is the lower 16 bits
of the 32 bit unsigned integer , with bit 15 (0..15) to used as the
sign bit for the 16 bit signed integer. Any ideas/help greatly
appreciated.

1. Remove the word 'efficient' from your lexicon. Study Knuth's/
Hoare's law.
2. Have you not studied the bitwise operators?

Answer to 1. I accept removal of efficient and no to ...laws.
Answer to 2. is yes, but I also want to be able to achieve this
without a host of complier warnings about the possible loss of data.

If compiler warnings bother you, disable them. Going from 32 bits to 16
bit *will cause* loss of data (the top 16 bits), the compiler cannot let
it go without a warning *unless* you tell it not to warn you.
V
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