Difference:
FloatingPointUnit
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Revision 29
2022-11-14 -
PeterSchmid
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Some Hints for Using the FPU
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It is better to be approximately right than exactly wrong.
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It is better to be approximately (vaguely) right than exactly wrong. Carveth Read
Do not use FPU in interrupt service routines.
Tasks/Threads with FPU operations need much more return stack depth.
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https://en.wikipedia.org/wiki/IEEE_754
https://en.wikipedia.org/wiki/Single-precision_floating-point_format
What Every Computer Scientist Should Know About Floating-Point Arithmetic
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Fixed Point
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Fixed Point
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https://en.wikipedia.org/wiki/Q_(number_format
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https://www.complang.tuwien.ac.at/forth/gforth/Docs-html/Number-Conversion.html#Number-Conversion
https://www.complang.tuwien.ac.at/forth/gforth/Docs-html/Floating-Point.html#Floating-Point
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*) fixpt-mat-lib.fs
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How to Use
: f|| ( r1 r2 -- r3) 2dup * -rot + / ;
27k 100k f|| fm.
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