diff --git a/audio/format.c b/audio/format.c
index 618a00e0c1..08b369c090 100644
--- a/audio/format.c
+++ b/audio/format.c
@@ -45,6 +45,11 @@ int af_fmt2bits(int format)
     return af_fmt2bps(format) * 8;
 }
 
+bool af_fmt_is_float(int format)
+{
+    return !!(format & AF_FORMAT_F);
+}
+
 static int bits_to_mask(int bits)
 {
     switch (bits) {
diff --git a/audio/format.h b/audio/format.h
index 06c5d566e5..b3ac0000c8 100644
--- a/audio/format.h
+++ b/audio/format.h
@@ -109,6 +109,7 @@ const char *af_fmt_to_str(int format);
 
 int af_fmt2bps(int format);
 int af_fmt2bits(int format);
+bool af_fmt_is_float(int format);
 int af_fmt_change_bits(int format, int bits);
 
 int af_fmt_to_planar(int format);