--- gforth/float.fs 1994/09/12 19:00:29 1.8 +++ gforth/float.fs 1995/08/27 19:56:29 1.15 @@ -26,20 +26,18 @@ : f, ( f -- ) here 1 floats allot f! ; -\ !! have create produce faligned pfas : fconstant ( r -- ) - falign here f, Create A, - DOES> @ f@ ; - -: fvariable - falign here 0. d>f f, AConstant ; + Create f, + DOES> f@ ; : fdepth ( -- n ) f0 @ fp@ - [ 1 floats ] Literal / ; -: FLit ( -- r ) r> faligned dup f@ float+ >r ; -: FLiteral ( r -- ) postpone FLit falign f, ; immediate +: FLit ( -- r ) r> dup f@ float+ >r ; +: FLiteral ( r -- ) + BEGIN here cell+ dup faligned <> WHILE postpone noop REPEAT + postpone FLit f, ; immediate -&16 Value precision +&15 Value precision : set-precision to precision ; : scratch ( r -- addr len ) @@ -83,19 +81,34 @@ ' sfnumber IS notfound -1e0 fasin 2e0 f* fconstant pi +: fvariable ( -- ) + Create 0.0E0 f, ; + \ does> ( -- f-addr ) + +1.0e0 fasin 2.0e0 f* fconstant pi + +: f2* 2.0e0 f* ; +: f2/ 0.5e0 f* ; +: 1/f 1.0e0 fswap f/ ; + + +\ We now have primitives for these, so we need not define them + +\ : falog ( f -- 10^f ) [ 10.0e0 fln ] FLiteral f* fexp ; + +\ : fsinh fexpm1 fdup fdup 1.0e0 f+ f/ f+ f2/ ; +\ : fcosh fexp fdup 1/f f+ f2/ ; +\ : ftanh f2* fexpm1 fdup 2.0e0 f+ f/ ; + +\ : fatanh fdup f0< >r fabs 1.0e0 fover f- f/ f2* flnp1 f2/ +\ r> IF fnegate THEN ; +\ : facosh fdup fdup f* 1.0e0 f- fsqrt f+ fln ; +\ : fasinh fdup fdup f* 1.0e0 f+ fsqrt f/ fatanh ; + +: f~ ( f1 f2 f3 -- flag ) fdup f0= IF fdrop f= EXIT THEN + fdup f0> IF frot frot f- fabs fswap + ELSE fnegate frot frot fover fabs fover fabs f+ frot frot + f- fabs frot frot f* THEN f< ; -: f2* 2e0 f* ; -: f2/ 2e0 f/ ; -: 1/f 1e0 fswap f/ ; - -: falog ( f -- 10^f ) [ 10e0 fln ] FLiteral f* fexp ; - -: fsinh fexpm1 fdup fdup 1e0 f+ f/ f+ f2/ ; -: fcosh fexp fdup 1/f f+ f2/ ; -: ftanh f2* fexpm1 fdup 2e0 f+ f/ ; - -: fatanh fdup f0< >r fabs 1e0 fover f- f/ f2* flnp1 f2/ - r> IF fnegate THEN ; -: facosh fdup fdup f* 1e0 f- fsqrt f+ fln ; -: fasinh fdup fdup f* 1e0 f+ fsqrt f/ fatanh ; +: f.s ." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 + ?DO dup i - 1- floats fp@ + f@ f. LOOP drop ;