Math question
- Subject: Math question
- From: delevaux eric
- Date: Sun, 12 Dec 2004 18:47:57 +0100
Another answer in a private mail :
A bigfloat is a arbitrary precision floating point number.
Float's precsion is machine dependent.
Thanks for reply
Eric
jean-denis fouks a écrit :
> Hello,
> delevaux eric wrote:
>
>> Hello
>> What is the difference between float and bfloat ?
>> I mean, what is the differebce between an float number and a bigfloat
>> number ?
>> Thanks
>> Eric
>
>
> Here is a basic sequence:
> (C1) float(%pi);
> (D1) 3.141592653589793
> (C2) bfloat(%pi);
> (D2) 3.141592653589793B0
> (C3) float(%pi*10^5);
> (D3) 314159.2653589793
> (C4) bfloat(%pi*10^5);
> (D4) 3.141592653589793B5
> (C5) FPPREC:100;
> (D5) 100
> (C6) float(%pi);
> (D6) 3.141592653589793
> (C7) bfloat(%pi);
> (D7)
> 3.14159265358979323846264338327950288419716939937510582097494459230781640#
>
> 6286208998628034825342117068B0
> (C8) FPPREC:5;
> (D8) 5
> (C9) float(%pi);
> (D9) 3.1416
> (C10) bfloat(%pi);
> (D10) 3.1416B0
> (C11) FPPREC:16;
> (D11) 16
> (C12) float(%pi);
> (D12) 3.141592653589793
> (C13) bfloat(%pi);
> (D13) 3.141592653589793B0
> (C14) FPPREC:40;
> (D14) 40
> (C15) float(%pi);
> (D15) 3.141592653589793
> (C16) bfloat(%pi);
> (D16) 3.141592653589793238462643383279502884197B0
> (C17) block([FPPREC:100],bfloat(%pi));
> (D17)
> 3.1415926535897932384626433832795028841971693993751058209749445923078164#
>
> 06286208998628034825342117068B0
> (C19) bfloat(%pi);
> (D19) 3.141592653589793238462643383279502884197B0
>
> Hope this helps.
> JDF
>
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