prelude: Move countof() here from bfs.h

countof() will likely be in the C2Y standard.

Link: https://www.open-std.org/JTC1/SC22/WG14/www/docs/n3469.htm
Link: https://thephd.dev/c2y-hitting-the-ground-running

1 files changed, 0 insertions, 5 deletions

diff --git a/src/bfs.h b/src/bfs.h
index 70a7282..ab96bf5 100644
--- a/src/bfs.h
+++ b/src/bfs.h
@@ -59,11 +59,6 @@ extern const char bfs_ldlibs[];
 // Fundamental utilities
 
 /**
- * Get the length of an array.
- */
-#define countof(...) (sizeof(__VA_ARGS__) / sizeof(0[__VA_ARGS__]))
-
-/**
  * False sharing/destructive interference/largest cache line size.
  */
 #ifdef __GCC_DESTRUCTIVE_SIZE