| \ High level floating point 14jan94py |
\ High level floating point 14jan94py |
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| 1 cells 4 = [IF] |
\ 1 cells 4 = [IF] |
| ' cells Alias sfloats |
\ ' cells Alias sfloats |
| ' cell+ Alias sfloat+ |
\ ' cell+ Alias sfloat+ |
| ' align Alias sfalign |
\ ' align Alias sfalign |
| ' aligned Alias sfaligned |
\ ' aligned Alias sfaligned |
| [ELSE] |
\ [ELSE] |
| : sfloats 2* 2* ; |
\ : sfloats 2* 2* ; |
| : sfloat+ 4 + ; |
\ : sfloat+ 4 + ; |
| : sfaligned ( addr -- addr' ) 3 + -4 and ; |
\ : sfaligned ( addr -- addr' ) 3 + -4 and ; |
| : sfalign ( -- ) here dup sfaligned swap ?DO bl c, LOOP ; |
\ : sfalign ( -- ) here dup sfaligned swap ?DO bl c, LOOP ; |
| [THEN] |
\ [THEN] |
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| 1 floats 8 = [IF] |
\ 1 floats 8 = [IF] |
| ' floats Alias dfloats |
\ ' floats Alias dfloats |
| ' float+ Alias dfloat+ |
\ ' float+ Alias dfloat+ |
| ' falign Alias dfalign |
\ ' falign Alias dfalign |
| ' faligned Alias dfaligned |
\ ' faligned Alias dfaligned |
| [ELSE] |
\ [ELSE] |
| : dfloats 2* 2* 2* ; |
\ : dfloats 2* 2* 2* ; |
| : dfloat+ 8 + ; |
\ : dfloat+ 8 + ; |
| : dfaligned ( addr -- addr' ) 7 + -8 and ; |
\ : dfaligned ( addr -- addr' ) 7 + -8 and ; |
| : dfalign ( -- ) here dup dfaligned swap ?DO bl c, LOOP ; |
\ : dfalign ( -- ) here dup dfaligned swap ?DO bl c, LOOP ; |
| [THEN] |
\ [THEN] |
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: sfalign ( -- ) \ float-ext s-f-align |
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here dup sfaligned swap ?DO bl c, LOOP ; |
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: dfalign ( -- ) \ float-ext d-f-align |
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here dup dfaligned swap ?DO bl c, LOOP ; |
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| : f, ( f -- ) here 1 floats allot f! ; |
1 sfloats constant sfloat+ ( sf-addr1 -- sf-addr2 ) \ float-ext s-float-plus |
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dofield: lastxt code-address! \ change the constant into a field |
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1 dfloats constant dfloat+ ( df-addr1 -- df-addr2 ) \ float-ext d-float-plus |
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dofield: lastxt code-address! \ change the constant into a field |
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| \ !! have create produce faligned pfas |
: f, ( f -- ) here 1 floats allot f! ; |
| : fconstant ( r -- ) |
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| falign here f, Create A, |
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| DOES> @ f@ ; |
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| : fvariable |
: fconstant ( r -- ) \ float |
| falign here 0. d>f f, AConstant ; |
Create f, |
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DOES> ( -- r ) |
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f@ ; |
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| : fdepth ( -- n ) f0 @ fp@ - [ 1 floats ] Literal / ; |
: fdepth ( -- n ) f0 @ fp@ - [ 1 floats ] Literal / ; |
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| : FLit ( -- r ) r> faligned dup f@ float+ >r ; |
: FLit ( -- r ) r> dup f@ float+ >r ; |
| : FLiteral ( r -- ) postpone FLit falign f, ; immediate |
: FLiteral ( r -- ) |
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BEGIN here cell+ dup faligned <> WHILE postpone noop REPEAT |
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postpone FLit f, ; immediate |
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| &16 Value precision |
&15 Value precision |
| : set-precision to precision ; |
: set-precision to precision ; |
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| : scratch ( r -- addr len ) |
: scratch ( r -- addr len ) |
| scratch over c@ emit '. emit 1 /string type |
scratch over c@ emit '. emit 1 /string type |
| 'E emit . ; |
'E emit . ; |
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require debugging.fs |
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| : sfnumber ( c-addr u -- r / ) |
: sfnumber ( c-addr u -- r / ) |
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2dup [CHAR] e scan |
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dup 0= |
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IF |
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2drop 2dup [CHAR] E scan |
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THEN |
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nip |
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IF |
| 2dup >float |
2dup >float |
| IF |
IF |
| 2drop state @ |
2drop state @ |
| IF |
IF |
| postpone FLiteral |
POSTPONE FLiteral |
| THEN |
THEN |
| ELSE |
EXIT |
| defers notfound |
THEN |
| THEN ; |
THEN |
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defers notfound ; |
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| ' sfnumber IS notfound |
' sfnumber IS notfound |
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| 1e0 fasin 2e0 f* fconstant pi |
: fvariable ( -- ) |
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Create 0.0E0 f, ; |
| : f2* 2e0 f* ; |
\ does> ( -- f-addr ) |
| : f2/ 2e0 f/ ; |
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| : 1/f 1e0 fswap f/ ; |
1.0e0 fasin 2.0e0 f* fconstant pi |
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: f2* 2.0e0 f* ; |
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: f2/ 0.5e0 f* ; |
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: 1/f 1.0e0 fswap f/ ; |
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| \ We now have primitives for these, so we need not define them |
\ We now have primitives for these, so we need not define them |
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| \ : falog ( f -- 10^f ) [ 10e0 fln ] FLiteral f* fexp ; |
\ : falog ( f -- 10^f ) [ 10.0e0 fln ] FLiteral f* fexp ; |
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| \ : fsinh fexpm1 fdup fdup 1e0 f+ f/ f+ f2/ ; |
\ : fsinh fexpm1 fdup fdup 1.0e0 f+ f/ f+ f2/ ; |
| \ : fcosh fexp fdup 1/f f+ f2/ ; |
\ : fcosh fexp fdup 1/f f+ f2/ ; |
| \ : ftanh f2* fexpm1 fdup 2e0 f+ f/ ; |
\ : ftanh f2* fexpm1 fdup 2.0e0 f+ f/ ; |
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| \ : fatanh fdup f0< >r fabs 1e0 fover f- f/ f2* flnp1 f2/ |
\ : fatanh fdup f0< >r fabs 1.0e0 fover f- f/ f2* flnp1 f2/ |
| \ r> IF fnegate THEN ; |
\ r> IF fnegate THEN ; |
| \ : facosh fdup fdup f* 1e0 f- fsqrt f+ fln ; |
\ : facosh fdup fdup f* 1.0e0 f- fsqrt f+ fln ; |
| \ : fasinh fdup fdup f* 1e0 f+ fsqrt f/ fatanh ; |
\ : fasinh fdup fdup f* 1.0e0 f+ fsqrt f/ fatanh ; |
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\ !! factor out parts |
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: f~ ( f1 f2 f3 -- flag ) \ float-ext |
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fdup f0= |
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IF |
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fdrop f= EXIT |
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THEN |
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fdup f0> |
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IF |
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frot frot f- fabs fswap |
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ELSE |
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fnegate frot frot fover fabs fover fabs f+ frot frot |
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f- fabs frot frot f* |
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THEN |
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f< ; |
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| : f.s ." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 |
: f.s ." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 |
| ?DO dup i - 1- floats fp@ + f@ f. LOOP drop ; |
?DO dup i - 1- floats fp@ + f@ f. LOOP drop ; |