update workflows (to also include ARM support)

Was facing issues with integer wrapping

.github/workflows/publish.yaml

@@ -0,0 +1,34 @@
+name: publish
+on:
+  release:
+    types: published
+  workflow_dispatch:
+    inputs:
+      release_tag:
+        required: true
+        description: the tag to release for
+        default: ""
+jobs:
+  release_bin:
+    runs-on: ${{matrix.os}}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-24.04
+          - ubuntu-24.04-arm
+    steps:
+      - uses: actions/checkout@v4
+      - run: make compile
+      - run: echo "FNAME=coinflip-$(uname -s)-$(uname -m)" >>"$GITHUB_ENV"
+      - run: mv bin/coinflip "$FNAME"
+      - uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{github.event.release.tag_name || github.event.inputs.release_tag}}
+          files: ${{env.FNAME}}
+          fail_on_unmatched_files: true
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+      - if: ${{env.ACT}}
+        uses: actions/upload-artifact@v4
+        with:
+          path: ${{env.FNAME}}

.gitignore

@@ -1,3 +1,8 @@
-.vscode
+.*
-build
+
-package/usr
+!.github/
+!.gitignore
+
+/bin/
+/obj/
+/compile_commands.json

makefile

@@ -0,0 +1,32 @@
+CC      ?= cc
+CFLAGS  += -Wall -Wextra -Wpedantic -O3 -MD -MP -std=gnu99
+LDFLAGS +=
+
+SRC = $(shell find src/ -name '*.c')
+OBJ := $(patsubst src/%,obj/%,$(SRC:.c=.o))
+BIN := bin/coinflip
+
+compile: compile_commands.json $(BIN)
+clean:
+	rm -rf obj/ bin/ compile_commands.json
+
+# link the .o files
+$(BIN): $(OBJ)
+	@mkdir -p $(@D)
+	$(CC) $(LDFLAGS) $(OBJ) -o $(BIN)
+
+# compile .o files (w/ .d files)
+obj/%.o: src/%.c
+	@mkdir -p $(@D)
+	$(CC) -c $(CFLAGS) -o $@ $<
+
+ifneq ($(shell which bear),)
+compile_commands.json: makefile
+	$(MAKE) clean
+	@touch compile_commands.json
+	bear -- make compile
+else
+compile_commands.json:
+endif
+
+-include $(OBJ:.o=.d)

package/DEBIAN/control

@@ -1,6 +0,0 @@
-Package: coinflip
-Version: 1.0
-Architecture: all
-Priority: optional
-Maintainer: Quinn
-Description: adds a coinflip command which has a 50% chance of printing "heads" and 50% chance of printing "tails"

src/main.c

@@ -1,18 +1,60 @@
+#include <bits/time.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdint.h>
 #include <stdio.h>
-#include <time.h>
 #include <stdlib.h>
+#include <sys/types.h>
+#include <time.h>
 
-int main(void) {
+#define error(ret, s, ...)                   \
-    srand(time(NULL)); // set the random seed to the system time
+	do {                                     \
-    char* result = NULL;
+		fprintf(stderr, (s), ##__VA_ARGS__); \
+		exit(ret);                           \
+	} while (0)
 
-    if (rand() & (~1) != 0) {
+typedef unsigned long long ull;
-        result = "heads";
+
-    }
+
-    else {
+int main(int argc, char** argv) {
-        result = "tails";
+	// get the current time to set as the seed
+	struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	srandom(ts.tv_nsec);
+
+	// return the result if no input
+	if (argc <= 1)
+		return printf("%s\n", (rand() & 1) ? "heads" : "tails");
+
+	// loop through arguments
+	for (unsigned i = 1; i < (unsigned)argc; ++i) {
+		// parse the argument
+		errno = 0;
+		ull c = strtoull(argv[i], NULL, 10);
+		if (errno != 0) error(errno, "parse error for string: '%s'\n", argv[i]);
+
+		// perform for the input count
+		ull headsc = 0; // amount of heads
+		ull tailsc = 0; // amount of tails
+
+		while (c >= 31) {
+			c -= 31;
+			long n = random();                // generate a random number for this batch
+			int cnt = __builtin_popcountl(n); // counts the set bits
+			headsc += cnt;
+			tailsc += 31 - cnt;
 		}
 
-    printf("%s\n", result);
+		if (c > 0) {
+			long n = random();
+			long msk = (1 << c) - 1;
+			int cnt = __builtin_popcountl(n & msk);
+			headsc += cnt;
+			tailsc += c - cnt;
+		}
+
+		// print the results of this cycle
+		printf("results:\n heads: %llu\n tails: %llu\n", headsc, tailsc);
+	}
 	return 0;
 }