Implement dagrow()

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/dynarr/dagrow.c b/lib/dynarr/dagrow.c
new file mode 100644
index 0000000..8273efe
--- /dev/null
+++ b/lib/dynarr/dagrow.c
@@ -0,0 +1,17 @@
+#include <stdint.h>
+
+#include "dynarr.h"
+
+void *
+(dagrow)(void *da, size_t n, size_t elemsz, size_t align)
+{
+	dynarr(uint8_t) cpy;
+	memcpy(&cpy, da, sizeof(cpy));
+
+	if (n > cpy.cap) {
+		cpy.buf = cpy.alloc(cpy.ctx, cpy.buf, cpy.cap, n, elemsz, align);
+		cpy.cap = n;
+	}
+
+	return memcpy(da, &cpy, sizeof(cpy));
+}