Import official C23 code examples for Modern C (Jens Gustedt, 2024)HEADupstream-importmain

- Add official C source files, Makefile, c23-fallback.h, and LICENSE
- Update README.md with study mirror notice

1 files changed, 22 insertions, 0 deletions

diff --git a/test_circular.c b/test_circular.c
new file mode 100644
index 0000000..338e16a
--- /dev/null
+++ b/test_circular.c
@@ -0,0 +1,22 @@
+#include <stdlib.h>
+#include "circular.h"
+
+int main(int argc, char* argv[]) {
+  size_t len = argc > 1 ? strtoull(argv[1], nullptr, 0) : 10;
+  fprintf(stderr, "starting with %zu elements in total\n", len);
+  circular* c = circular_new(len);
+  circular_fput(c, stderr);
+  for (size_t i = 0; i < len-1; ++i) {
+    if (!circular_append(c, i)) break;
+  }
+  circular_fput(c, stderr);
+  for (size_t i = 0; i < len/2; ++i) {
+    if (!circular_append(c, circular_pop(c))) break;
+  }
+  circular_fput(c, stderr);
+  c = circular_resize(c, 2*len);
+  circular_fput(c, stderr);
+  c = circular_resize(c, len);
+  circular_fput(c, stderr);
+  circular_delete(c);
+}