diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 65bc744..4650758 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -237,6 +237,7 @@
 | Software half-precision operations.
 *----------------------------------------------------------------------------*/
 
+float16 float16_round_to_int(float16, float_status *status);
 float16 float16_add(float16, float16, float_status *status);
 float16 float16_sub(float16, float16, float_status *status);
 float16 float16_mul(float16, float16, float_status *status);