searching for procedures in jal lib files

[vsurducan]

I think this topic was previously discussed a long time ago...

How can I search for a specific procedure ( for example swapping bytes in a word) in order to find different types of implementation (for lower code length, etc)?

thx,

procedure swap_LSB_MSB (word in crc, word out swapped_crc) is
-- When the CRC is placed into the message, its upper and lower bytes must be swapped crc_lo; crc_hi
   LSB_crc = byte (crc & 0x00ff)
   MSB_crc = byte (crc & 0xff00)
   swapped_crc = 256*LSB_crc + MSB_crc
end procedure

[vsurducan]

var byte LSB_crc, MSB_crc

procedure swap_LSB_MSB (word in crc, word out swapped_crc) is
-- When the CRC is placed into the message, its upper and lower bytes must be swapped crc_lo; crc_hi
   LSB_crc = byte (crc & 0x00ff)

   crc = crc >> 8
   MSB_crc = byte (crc)

   swapped_crc = 256*LSB_crc + MSB_crc
end procedure

Obviously the procedure in the  email below was wrong...not really sure about this one (from the compiler perspective)....:)

[Rob CJ]

Hi Vasile,

You can search for keywords in all JAL libraries I assume.

But swapping can be done simpler I think. For example.

var word crc_in

var byte crc_in_low at crc_in

var byte crc_in_high at crc_in + 1

var word crc_out

var byte crc_out_high at crc_out

var byte crc_out_low at crc_out + 1

crc_out_low = crc_in_low

crc_out_high = crc_in_high

Kind regards,

Rob

---

Van: jal...@googlegroups.com <jal...@googlegroups.com> namens vsurducan <vsur...@gmail.com>
Verzonden: woensdag 18 september 2024 12:55
Aan: jal...@googlegroups.com <jal...@googlegroups.com>
Onderwerp: [jallib] Re: searching for procedures in jal lib files

 

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[vsurducan]

Rob this example seems better, it eats 194 bytes compared with 202 of mine. Thx, I forgot this typo...

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