Difference: FloatingPointUnit (15 vs. 16)

Revision 162022-11-03 - PeterSchmid

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Changed:
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<
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Deleted:
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  • printf("%f", myFloat) f. fe. fs.
 
  • atof() oder strtof() benutzen?

  • nur single-precision? (7..8 Dezimalstellen, H7 hat double precision FPU)
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 fround ( r1 -- r2 ) round r1 to an integral value using the "round to nearest" rule, giving r2

fflags@ ( -- u ) get the current value of the Floating Point Status/Control register FPSCR

Changed:
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<		fflags! ( -- u ) assign the given value to the Floating Point Status/Control register FPSCR
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>		fflags! ( u -- ) assign the given value to the Floating Point Status/Control register FPSCR
  f0= ( r -- ? ) flag is true if r is equal to zero f0< ( r -- ? ) flag is true if r is less than zero
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 f>fx ( r -- d ) d is the fixed-point equivalent of the floating-point r fx>f ( d -- r ) r is the floating-point equivalent of the fixed-point d
Changed:
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<		f. ( r -- ) Display, with a trailing space, the top number using fixed-point notation
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>		pi ( -- r ) r is pi, approx. 3.14159274101257324 f. ( r -- ) display, with a trailing space, the floating-point number r using fixed-point notation
 
Changed:
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<		fx* fx/
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>		d+ ( d1 d2 -- d3 ) add d1 to d2 giving the sum d3 d- ( d1 d2 -- d3 ) subtract d2 from d1, giving d3 fx* ( d1 d2 -- d3 ) multiply d1 by d2 giving d3 fx/ ( d1 d2 -- d3 ) divide d1 by d2, giving the quotient d3 fx. ( d -- ) display, with a trailing space, the fixed-point number d fx.n ( d n -- ) print a fixed-point number with n fractional digits (truncated)
 
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