max float

[RXB]

On 5/17/2024 at 7:41 PM, senior_falcon said:

Here BASIC has the speed advantage over XB:

BASIC                 1.49E-8 years

Extended BASIC   1.88E-8 years

 

Yes but XB is more Accurate the bigger the numbers than Basic.

That is why there is almost 1/3rd of a ROM devoted to Floating Point for math routines in XB that BASIC does not have even in EA Cart.

TI is a company with Calculators as a source.

TI did this so I assume they thought the MATH ROMs would be required in XB Programs.

And yes it slows down XB compared to Basic due to it complicates what is being done.

[SteveB]

On 7/28/2024 at 6:04 PM, Lee Stewart said:

 

I missed one mistake of Thierry’s in the above quoted post. I can no longer edit that post, so here are the spoiler contents with the correct “actual” value in the fourth floating point number:

 

Exponent  Mantissa                      Value               Actual Value     
--------  ---------------------------   -----------------   ------------------
>40       >01 >02 >03 >04 >05 >06 >07    1.020304050607        <correct>
>41       >01 >02 >03 >04 >05 >06 >0B   10.20304050611      102.0304050611
>3F       >05 >00 >00 >00 >00 >00 >00    0.5                  0.05
>BF(-41)  >FF >02 >03 >05 >05 >06 >12  -10.20304050618       -1.020305050618    <---corrected value
>00       >00 >xx >xx >xx >xx >xx >xx    0 (any exponent!)    0 (any x values!)

 

...lee

I did some checks with my tool .. same results.