Difference between revisions of "Programming performance/JasonWoof gforth"
Jump to navigation
Jump to search
(forgot to note time spent) |
Tomjaguarpaw (talk | contribs) (Deleting page that hasn't been edited for over 10 years) |
||
| Line 1: | Line 1: | ||
| − | Programming language: gforth (should work in other forths too) |
||
| − | |||
| − | Experience level with language: quite a bit. I only had to look up a few things |
||
| − | |||
| − | Time spent: 102 minutes |
||
| − | |||
| − | Notes: |
||
| − | |||
| − | 1) I implemented this problem once before in ruby (Don't think that helped too much though. The two languages have little in common.) |
||
| − | |||
| − | 2) I wrote this from scratch, including a number parser and array/list code. In the real world one would hopefully already have code for these things. |
||
| − | |||
| − | 3) This program expects gspc.txt to come through on stdin, so run like so: gforth jasonwoof_gspc.fs < gspc.txt |
||
| − | |||
| − | <pre> |
||
| − | |||
| − | #! /usr/bin/gforth |
||
| − | |||
| − | warnings off |
||
| − | |||
| − | fvariable bank 10000e bank f! |
||
| − | : p>f s>d d>f 100e f/ ; ( pennies -- float ) |
||
| − | |||
| − | \ make a FOR that makes sense, and can take 0 as count, and UNLOOP |
||
| − | : for 0 postpone literal postpone ?do ; immediate |
||
| − | : next postpone loop ; immediate |
||
| − | |||
| − | : ++ 1 swap +! ; ( var -- ) |
||
| − | : -- -1 swap +! ; ( var -- ) |
||
| − | |||
| − | \ kill the header |
||
| − | : dump-line key 10 = if exit then recurse ; |
||
| − | dump-line |
||
| − | |||
| − | : dump-word key 32 = if exit then recurse ; |
||
| − | : dump-others 6 for dump-word next ; |
||
| − | |||
| − | variable #fields |
||
| − | variable last-field |
||
| − | |||
| − | : field-pop last-field @ 4 - dup last-field ! @ ; ( -- field ) \ return the next field |
||
| − | |||
| − | |||
| − | : -parse-close key dup 10 = if drop exit then dup [char] . = if drop recurse exit then 48 - swap 10 * + recurse ; |
||
| − | : parse-close 0 -parse-close ; ( -- pennies ) \ parse digits until end of line (ignoring decimal point) |
||
| − | : parse-field dump-others parse-close , #fields ++ ; ( -- ) |
||
| − | : parse-fields begin key -1 = if exit then parse-field again ; |
||
| − | parse-fields |
||
| − | here last-field ! |
||
| − | |||
| − | fvariable last-close |
||
| − | fvariable close |
||
| − | fvariable sell-thresh |
||
| − | |||
| − | \ initialize close |
||
| − | field-pop p>f close f! |
||
| − | #fields @ 1 - #fields ! |
||
| − | |||
| − | variable #holds |
||
| − | create holds 1000 floats allot |
||
| − | : hold-close-a 2 * floats holds + ; |
||
| − | : hold-last-a #holds @ hold-close-a ; |
||
| − | : hold-last-close! hold-last-a f! ; |
||
| − | : hold-last-shares! hold-last-a float+ f! ; |
||
| − | : hold-close@ hold-close-a f@ ; |
||
| − | : hold-shares@ hold-close-a float+ f@ ; |
||
| − | : hold-push hold-last-shares! close f@ hold-last-close! #holds ++ ; ( #shares -- ) |
||
| − | : hold-cleanup #holds @ dup for 1 - dup hold-close@ f0= 0= if unloop drop exit then #holds -- next drop ; |
||
| − | |||
| − | : get-close close f@ last-close f! field-pop p>f close f! ; ( -- ) |
||
| − | : change close f@ last-close f@ f- last-close f@ f/ ; ( -- % ) |
||
| − | : withdraw bank f@ 10e f/ bank f@ fover f- bank f! ; ( -- cash ) |
||
| − | : deposit bank f@ f+ bank f! ; ( money -- ) |
||
| − | : buy withdraw close f@ f/ hold-push ; |
||
| − | : ?buy change -0.03e f< if buy then ; |
||
| − | : hold-sell dup float+ f@ close f@ f* deposit >r 0e r> f! ; ( addr -- ) |
||
| − | : -?hold-sell dup f@ sell-thresh f@ f> if drop exit then hold-sell ; ( addr -- ) |
||
| − | : ?hold-sell dup f@ f0= if drop exit then -?hold-sell ; ( addr -- ) |
||
| − | : set-sell-thresh close f@ 1.06e f/ sell-thresh f! ; |
||
| − | : -sell #holds @ for i hold-close-a ?hold-sell next ; |
||
| − | : sell set-sell-thresh -sell hold-cleanup ; |
||
| − | : trade #fields @ for get-close ?buy sell next ; |
||
| − | : sell-all 100000e sell-thresh f! -sell ; |
||
| − | |||
| − | trade |
||
| − | sell-all |
||
| − | |||
| − | bank f@ f. cr bye |
||
| − | |||
| − | </pre> |
||