--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtwamr/prm2bits.c	Mon May 06 19:34:59 2024 +0000
@@ -0,0 +1,27 @@
+/*
+ * A cleaner reimplementation of AMR Prm2bits() function.
+ */
+
+#include "typedef.h"
+#include "namespace.h"
+#include "bitno.h"
+#include "prm2bits.h"
+
+void Prm2bits(enum Mode mode, const Word16 prm[], Word16 bits[])
+{
+	const Word16 *t = bitno[mode];
+	unsigned nparam = prmno[mode];
+	unsigned n, p, mask;
+	Word16 *b = bits;
+
+	for (n = 0; n < nparam; n++) {
+		p = prm[n];
+		mask = 1 << (*t++ - 1);
+		for (; mask; mask >>= 1) {
+			if (p & mask)
+				*b++ = 1;
+			else
+				*b++ = 0;
+		}
+	}
+}