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Fix alt build of 1995/cdua

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The Makefile was missing a SLEEP variable to simplify reconfiguring the
usleep(3) (for alt code).

Reword the alt code suggestion as well in the README.md.
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Cody Boone Ferguson committed 2024-01-10 09:28:33 -08:00
1 parent feaf5fe64d
commit d2f02c5990
2 files changed
+14 -11
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1995/cdua/Makefile
+4 -1
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@@ -56,9 +56,12 @@ CSTD= -std=gnu90
# #
ARCH= ARCH=
# Variable to simplify reconfiguring sleep time for alt code
#
SLEEP=3000
# Defines that are needed to compile # Defines that are needed to compile
# #
CDEFINE= -DZ=3000 CDEFINE= -DZ=${SLEEP}
# Include files that are needed to compile # Include files that are needed to compile
# #
1995/cdua/README.md
+10 -10
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@@ -1,17 +1,18 @@
## To build: ## To build:
We recommend that you try this alternate version first. For reasons why this is We recommend that you try the alternate version first so you can see what this
see the [original code](#original-code) section below. entry looked like back in 1995 (with a configurable speed). See the [original
code](#original-code) section below for the original entry.
```sh ```sh
make alt make alt
``` ```
This alternate version uses `usleep(3)` with `Z` (defined in the Makefile, The alternate version uses `usleep(3)` with `SLEEP` (defined in the Makefile,
default `3000`) microseconds to make it easier to see the maze being solved in default `3000`) microseconds to make it easier to see the maze being solved in
real time. You can redefine `Z` to reconfigure it in case it's going too slow, real time. You can redefine `SLEEP` at compile time to reconfigure it in case
too fast :-) or you're doing some strange experiment like making it 100000 it's going too slow, too fast :-) or you're doing some strange experiment like
(which is actually fun :-) ). making it 100000 (which is actually fun :-) ).
### Bugs and (Mis)features: ### Bugs and (Mis)features:
@@ -34,10 +35,9 @@ For more detailed information see [1995 cdua in bugs.md](/bugs.md#1995-cdua).
### Try: ### Try:
To use 1500 for `Z` do:
```sh ```sh
make CFLAGS="-DZ=1500" clobber alt make SLEEP=1500 clobber alt
./cdua.alt # press enter and watch it go much faster! ./cdua.alt # press enter and watch it go much faster!
``` ```
@@ -45,12 +45,12 @@ make CFLAGS="-DZ=1500" clobber alt
You might also like to try: You might also like to try:
```sh ```sh
make CFLAGS="-DZ=65000" clobber alt make SLEEP=65000 clobber alt
./cdua.alt # press enter and watch it go much slower! ./cdua.alt # press enter and watch it go much slower!
``` ```
Do you see anything strange in this version when `Z` is a high value like Do you see anything strange in this version when `SLEEP` is a high value like
`65000`? What happens if you use `100000`? Is this strange output still there? `65000`? What happens if you use `100000`? Is this strange output still there?
Why? Why?