diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h
index 8c78019..3b833ea 100644
--- a/arch/mips/math-emu/ieee754.h
+++ b/arch/mips/math-emu/ieee754.h
@@ -79,6 +79,7 @@
 				union ieee754sp y);
 union ieee754sp ieee754sp_msubf(union ieee754sp z, union ieee754sp x,
 				union ieee754sp y);
+int ieee754sp_2008class(union ieee754sp x);
 
 /*
  * double precision (often aka double)
@@ -108,6 +109,7 @@
 				union ieee754dp y);
 union ieee754dp ieee754dp_msubf(union ieee754dp z, union ieee754dp x,
 				union ieee754dp y);
+int ieee754dp_2008class(union ieee754dp x);
 
 
 /* 5 types of floating point number