Author Topic: Advanced Math in Output( and Text( ?  (Read 8286 times)

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Offline Hot_Dog

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Advanced Math in Output( and Text( ?
« on: April 28, 2011, 03:44:08 pm »
In a further attempt to speed up text-based games, I'm working to add some code for Correlation to compute arguments inside of ln( and e^(.  This will happen only if your arguments are simple, otherwise Ti-Basic will compute the arguments.

By default I'll allowing addition, subtraction, multiplication, variables, abs( substrings, parenthesis, Ans, L1-L6, Martices, strings and temporary strings.  For instance, this would be totally valid:

Output(2M,17-Ans,L1(Ans

I know that these appear a lot in games.  However, is there anything else that you guys use A LOT?  Please vote, and give suggestions of your own if you think of them.

Offline Deep Toaster

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Re: Advanced Math in Output( and Text( ?
« Reply #1 on: April 28, 2011, 07:35:32 pm »
Division, definitely. sin( and cos( occasionally (for circular structures).




Offline Hot_Dog

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Re: Advanced Math in Output( and Text( ?
« Reply #2 on: April 28, 2011, 07:47:12 pm »
I forgot to mention, by the way, I'm not going to add int( because all parameters except strings will be turned into integers anyways.

Offline Xeda112358

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Re: Advanced Math in Output( and Text( ?
« Reply #3 on: April 28, 2011, 08:06:03 pm »
What about iPart(? XP
Yeah, usually the only times I use sin( and cos( are for circular things. I like to use log(, often, but that is usually to find the number of digits in an integer. Maybe you could make log( do that instead? (meaning find the number of digits, minus 1)

Offline Hot_Dog

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Re: Advanced Math in Output( and Text( ?
« Reply #4 on: April 28, 2011, 08:10:43 pm »
I've actually never heard of times when people would need the number of digits for Output( and Text(.  Can you enlighten me, please? :)

Just a reminder, you can still use ln( and e^( if you have really weird functions, they just won't be super-duper quick.

Offline ZippyDee

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Re: Advanced Math in Output( and Text( ?
« Reply #5 on: April 28, 2011, 08:11:18 pm »
Centering text, right justifying text. If it's a number you need to know how far to place it out from the side.
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Offline Xeda112358

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Re: Advanced Math in Output( and Text( ?
« Reply #6 on: April 28, 2011, 08:12:37 pm »
Centering text, right justifying text. If it's a number you need to know how far to place it out from the side.
Yes, exactly :) I also use it when I am making math programs that output results in a more pretty way :)

Offline Hot_Dog

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Re: Advanced Math in Output( and Text( ?
« Reply #7 on: April 28, 2011, 08:13:08 pm »
Hmmm...Never thought of that.  Okay, I'll put in log( for that.

Offline Xeda112358

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Re: Advanced Math in Output( and Text( ?
« Reply #8 on: April 28, 2011, 08:16:48 pm »
Cool, that will be great! As an example, if I know a number is an integer and I want to right justify it so the last number is in the ninth column:
Code: [Select]
Output(1,iPart(10-log(Ans)),Ans

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Re: Advanced Math in Output( and Text( ?
« Reply #9 on: April 28, 2011, 08:33:00 pm »
What about just sending the entire argument string to the OS to evaluate?




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Re: Advanced Math in Output( and Text( ?
« Reply #10 on: April 28, 2011, 08:34:01 pm »
What about just sending the entire argument string to the OS to evaluate?

The OS does it by default, but it's too slow.  I'm making this a faster one, since most people don't use Anova( or Sort( or other complex ones like that

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Re: Advanced Math in Output( and Text( ?
« Reply #11 on: April 28, 2011, 08:35:54 pm »
You are trying to parse things yourself, for speed, right?

Offline ZippyDee

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Re: Advanced Math in Output( and Text( ?
« Reply #12 on: April 28, 2011, 08:38:35 pm »
What about just sending the entire argument string to the OS to evaluate?

The OS does it by default, but it's too slow.  I'm making this a faster one, since most people don't use Anova( or Sort( or other complex ones like that

Anova(? I don't even have that o.O
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Offline Hot_Dog

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Re: Advanced Math in Output( and Text( ?
« Reply #13 on: April 28, 2011, 08:39:14 pm »
You are trying to parse things yourself, for speed, right?

Exactly.  The problem is order of operations will be left-to-right (excluding parenthesis), so converting old games will be slightly tricker now.

Btw, slightly off topic, but thanks Runer112 for reminding me of using the stack to help out with this

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Re: Advanced Math in Output( and Text( ?
« Reply #14 on: April 28, 2011, 08:42:52 pm »
For infix parsing, convert to postfix first. It makes your life SO much easier. But left-to-right parsing would be even easier than that, I suppose...
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