Difference: FloatingPointUnit (36 vs. 37)

Revision 372022-11-19 - PeterSchmid

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META TOPICPARENT	name="WebHome"

%DASHBOARD{ section="banner"

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<
<

Some Links

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Links

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x.n ( r n -- ) print a fixed-point number r with n fractional digits (truncated) x#S ( n1 -- n2 ) Adds 32 comma-digits to number output x# ( n1 -- n2 ) Adds one comma-digit to number output

Deleted:

<
< d>s s>d

Words from fixpt-mat-lib.fs

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pi 2e f* 1000e f/ \ 2*pi/1000 cr 1000 0 do

Changed:

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< dup i s>f f* drop \ dup i s>f f* fsin drop

>
> \ dup i s>f f* drop dup i s>f f* fsin drop

\ i . dup i s>f f* fsin fs. cr \ i . dup i s>f f* fsin hex. cr loop

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323

Changed:

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< With sqrt it takes about 323 ms, without about 6 ms. Therefore a sqrt word takes about 317 us, with FPU it takes less than 1 us. A simple multiplication about 6 us (FPU 300 ns).

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> With sqrt it takes about 323 ms (sin is not working for me), without about 6 ms. Therefore a sqrt word takes about 317 us, with FPU it takes less than 1 us. A simple multiplication about 6 us (FPU 300 ns).

Only addition and subtraction are comparable:

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