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Fix FOR index variable and update lores example

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This commit is contained in:
David Schmenk 2024-07-23 17:05:03 -07:00
parent bbfa59ccc7
commit e77ff928ca
3 changed files with 19 additions and 20 deletions
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14
src/lisp/lores.lisp
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@ -1,12 +1,12 @@
(DEFINE
(PLOTFUNC (LAMBDA (FN)
(PROG (X Y)
(SETQ X 0)
A (SETQ Y (* 0.99 (FN (/ (- X 20) 20.0))))
(IF (AND (> Y -1.0) (< Y 1.0))
(PLOT X, (* (+ Y 1.0) 19.0)))
(SETQ X (+ X 1))
(IF (< X 40) (GO A))
(PROG (I X Y)
(FOR I 0 1 (< I 40)
(SETQ X (/ (- I 19.5) 20.0))
(SETQ Y (FN X))
(AND (AND (> Y -1.0) (< Y 1.0))
(PLOT I (- 19.5 (* Y 20.0))))
)
(RETURN 0)
)
))

25
src/lisp/s-expr.pla
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@ -660,6 +660,9 @@ export def new_assoc(symptr, valptr)#0
pairlist=>car = pair
pairlist=>cdr = assoc_list
assoc_list = pairlist
if trace
puts("\n New ASSOC:"); print_expr(pair); putln
fin
end
def assoc_pair(symptr)
@ -1245,27 +1248,23 @@ def natv_trace(symptr, expr)
end
def natv_for(symptr, expr)
var index, ufunc, dlist
var[2] incval, stepval
var idxsym, idxint, ufunc, dlist
word[2] stepval
if expr=>car->type & TYPE_MASK <> SYM_TYPE
idxsym = expr=>car
if idxsym->type & TYPE_MASK <> SYM_TYPE
puts("For index not symbol\n")
return NULL
fin
index = eval_expr(expr=>car)
expr = expr=>cdr
if index->type <> NUM_INT
puts("FOR index not integer\n")
return NULL
fin
expr = expr=>cdr
symptr = eval_expr(expr=>car)
expr = expr=>cdr
if symptr->type <> NUM_INT
puts("FOR initial not integer\n")
return NULL
fin
incval[0] = symptr=>intval[0]
incval[1] = symptr=>intval[1]
set_assoc(idxsym, new_int(symptr=>intval[0], symptr=>intval[1]))
idxint = eval_expr(idxsym)
symptr = eval_expr(expr=>car)
expr = expr=>cdr
if symptr->type <> NUM_INT
@ -1289,9 +1288,9 @@ def natv_for(symptr, expr)
sweep_stack[sweep_stack_top - 1] = eval_expr(expr=>car)
expr = expr=>cdr
loop
load32(index + intval) // Manipulate integer value directly!
load32(idxint + intval) // Manipulate integer value directly!
add32(@stepval)
store32(index + intval)
store32(idxint + intval)
loop
return pop_sweep_stack
end