diff --git a/format.sh b/format.sh
index 036a4e3..bcc1b38 100755
--- a/format.sh
+++ b/format.sh
@@ -1,2 +1,5 @@
 #!/bin/sh
+while [ ! -d .git ]; do
+	cd ..
+done
 clang-format --verbose -i `find src lib include -name "*.c" -or -name "*.h"`
diff --git a/include/sj3core/sj_struct.h b/include/sj3core/sj_struct.h
index 4bf270c..c551b66 100644
--- a/include/sj3core/sj_struct.h
+++ b/include/sj3core/sj_struct.h
@@ -140,12 +140,12 @@ typedef struct dict {
 	TypeDicSeg segunit;
 	TypeDicSeg maxunit;
 
-	IFunc getofs;
-	IFunc getidx;
-	IFunc getdic;
-	IFunc putidx;
-	IFunc putdic;
-	IFunc rszdic;
+	IFuncDict getofs;
+	IFuncDict getidx;
+	IFunc	  getdic;
+	IFunc	  putidx;
+	IFunc	  putdic;
+	IFunc	  rszdic;
 } DICT;
 
 typedef struct dictl {
diff --git a/include/sj3core/sj_typedef.h b/include/sj3core/sj_typedef.h
index ad02c19..68d80f7 100644
--- a/include/sj3core/sj_typedef.h
+++ b/include/sj3core/sj_typedef.h
@@ -46,9 +46,11 @@ typedef unsigned char  u_char;
 typedef unsigned short u_short;
 typedef unsigned int   u_int;
 
-typedef void (*VFunc)();
-typedef u_char* (*UCPFunc)();
-typedef int (*IFunc)();
+typedef void (*VFunc)(void*, void*, void*);
+typedef u_char* (*UCPFunc)(u_char*, u_char*, int);
+typedef int (*IFunc)(void*, int);
+
+typedef int (*IFuncDict)(void*);
 
 typedef u_char	TypeGroup;
 typedef u_char	TypeGram;
diff --git a/lib/sj3core/clstudy.c b/lib/sj3core/clstudy.c
index 7893191..d3e4bf0 100644
--- a/lib/sj3core/clstudy.c
+++ b/lib/sj3core/clstudy.c
@@ -37,7 +37,7 @@
 
 #include "sj_kanakan.h"
 
-static u_char *delcldata(), *srchclpos();
+static u_char *delcldata(u_char*), *srchclpos(u_char*);
 static int     delclold();
 
 int clstudy(u_char* yomi1, u_char* yomi2, STDYOUT* stdy) {
diff --git a/lib/sj3core/functbl.c b/lib/sj3core/functbl.c
index 4877541..1f04fd3 100644
--- a/lib/sj3core/functbl.c
+++ b/lib/sj3core/functbl.c
@@ -39,33 +39,31 @@
 #include "sj_kanakan.h"
 
 VFunc cvtnum_func[] = {
-    num_type00, num_type01, num_type02, num_type03,
-    num_type04, num_type05, num_type06, num_type07,
-    num_type08, num_type09, num_type10, num_type11,
-    num_type12, num_type13, num_type14};
+    (VFunc)num_type00, (VFunc)num_type01, (VFunc)num_type02, (VFunc)num_type03,
+    (VFunc)num_type04, (VFunc)num_type05, (VFunc)num_type06, (VFunc)num_type07,
+    (VFunc)num_type08, (VFunc)num_type09, (VFunc)num_type10, (VFunc)num_type11,
+    (VFunc)num_type12, (VFunc)num_type13, (VFunc)num_type14};
 
 UCPFunc getkan_func[] = {
-    getkan_norm, getkan_norm, getkan_hira, getkan_kata,
-    getkan_knj, getkan_ofs, getkan_norm, getkan_none,
-    getkan_norm, getkan_norm, getkan_hira, getkan_kata,
-    getkan_knj, getkan_ofs, getkan_norm, getkan_none};
+    (UCPFunc)getkan_norm, (UCPFunc)getkan_norm, (UCPFunc)getkan_hira, (UCPFunc)getkan_kata,
+    (UCPFunc)getkan_knj, (UCPFunc)getkan_ofs, (UCPFunc)getkan_norm, (UCPFunc)getkan_none,
+    (UCPFunc)getkan_norm, (UCPFunc)getkan_norm, (UCPFunc)getkan_hira, (UCPFunc)getkan_kata,
+    (UCPFunc)getkan_knj, (UCPFunc)getkan_ofs, (UCPFunc)getkan_norm, (UCPFunc)getkan_none};
 
 IFunc setjrec_func[] = {
-    setj_norm2, setj_norm2, setj_norm1, setj_norm1,
-    setj_knj, setj_ofs, setj_norm2, setj_atrb,
-    setj_norm2, setj_norm2, setj_norm1, setj_norm1,
-    setj_knj, setj_ofs, setj_norm2, setj_atrb};
+    (IFunc)setj_norm2, (IFunc)setj_norm2, (IFunc)setj_norm1, (IFunc)setj_norm1,
+    (IFunc)setj_knj, (IFunc)setj_ofs, (IFunc)setj_norm2, (IFunc)setj_atrb,
+    (IFunc)setj_norm2, (IFunc)setj_norm2, (IFunc)setj_norm1, (IFunc)setj_norm1,
+    (IFunc)setj_knj, (IFunc)setj_ofs, (IFunc)setj_norm2, (IFunc)setj_atrb};
 
 IFunc hiraknj_func[] = {
-    hiraknj_hira, hiraknj_norm, hiraknj_hask, hiraknj_kask,
-    hiraknj_knj, hiraknj_ofs, hiraknj_norm, hiraknj_atrb,
-    hiraknj_hira, hiraknj_norm, hiraknj_hask, hiraknj_kask,
-    hiraknj_knj, hiraknj_ofs, hiraknj_norm, hiraknj_atrb};
+    (IFunc)hiraknj_hira, (IFunc)hiraknj_norm, (IFunc)hiraknj_hask, (IFunc)hiraknj_kask,
+    (IFunc)hiraknj_knj, (IFunc)hiraknj_ofs, (IFunc)hiraknj_norm, (IFunc)hiraknj_atrb,
+    (IFunc)hiraknj_hira, (IFunc)hiraknj_norm, (IFunc)hiraknj_hask, (IFunc)hiraknj_kask,
+    (IFunc)hiraknj_knj, (IFunc)hiraknj_ofs, (IFunc)hiraknj_norm, (IFunc)hiraknj_atrb};
 
-u_char *makekan_1byte(), *makekan_knj(), *makekan_ofs();
-u_char *makekan_norm(), *makekan_none();
 UCPFunc makekan_func[] = {
-    makekan_norm, makekan_norm, makekan_1byte, makekan_1byte,
-    makekan_knj, makekan_ofs, makekan_norm, makekan_none,
-    makekan_norm, makekan_norm, makekan_1byte, makekan_1byte,
-    makekan_knj, makekan_ofs, makekan_norm, makekan_none};
+    (UCPFunc)makekan_norm, (UCPFunc)makekan_norm, (UCPFunc)makekan_1byte, (UCPFunc)makekan_1byte,
+    (UCPFunc)makekan_knj, (UCPFunc)makekan_ofs, (UCPFunc)makekan_norm, (UCPFunc)makekan_none,
+    (UCPFunc)makekan_norm, (UCPFunc)makekan_norm, (UCPFunc)makekan_1byte, (UCPFunc)makekan_1byte,
+    (UCPFunc)makekan_knj, (UCPFunc)makekan_ofs, (UCPFunc)makekan_norm, (UCPFunc)makekan_none};
diff --git a/lib/sj3core/getkanji.c b/lib/sj3core/getkanji.c
index a1cce5c..be8d93c 100644
--- a/lib/sj3core/getkanji.c
+++ b/lib/sj3core/getkanji.c
@@ -38,7 +38,7 @@
 
 #include "sj_kanakan.h"
 
-static u_char* code2kanji();
+static u_char* code2kanji(u_char* s, u_char* d, u_char* ym, int yl, int flg);
 
 u_char*
 getkan_none(u_char* s, u_char* d, u_char* ym, int yl, int flg) {
diff --git a/lib/sj3core/getrank.c b/lib/sj3core/getrank.c
index 3e4a509..c171faf 100644
--- a/lib/sj3core/getrank.c
+++ b/lib/sj3core/getrank.c
@@ -37,7 +37,7 @@
 
 #include "sj_kanakan.h"
 
-static void setstynum(), setnspr(), regetrank();
+static void setstynum(), setnspr(KHREC*, STDYIN*), regetrank();
 
 void getrank() {
 
diff --git a/lib/sj3core/mkjiritu.c b/lib/sj3core/mkjiritu.c
index af738f4..b381bc8 100644
--- a/lib/sj3core/mkjiritu.c
+++ b/lib/sj3core/mkjiritu.c
@@ -38,7 +38,7 @@
 
 #include "sj_kanakan.h"
 
-static void dic_mu(), dic_cl();
+static void dic_mu(int), dic_cl();
 
 void mkjiritu(int mode) {
 	u_char	chkind1;
diff --git a/lib/sj3core/mkkouho.c b/lib/sj3core/mkkouho.c
index d119bd7..b240582 100644
--- a/lib/sj3core/mkkouho.c
+++ b/lib/sj3core/mkkouho.c
@@ -41,10 +41,10 @@
 
 #include "sj_kanakan.h"
 
-static void    getkhtbl(), cl_kanji();
-static int     diffknj();
-static void    cl_numcmn();
-static u_char* makekan();
+static void    getkhtbl(CLREC*), cl_kanji(JREC*, CLREC*);
+static int     diffknj(JREC*, u_char*, int);
+static void    cl_numcmn(JREC*, CLREC*);
+static u_char* makekan(u_char*, u_char*, int);
 
 void mkkouho() {
 	CLREC* clrec;
diff --git a/lib/sj3core/peepdic.c b/lib/sj3core/peepdic.c
index 636379e..5af2362 100644
--- a/lib/sj3core/peepdic.c
+++ b/lib/sj3core/peepdic.c
@@ -40,7 +40,7 @@
 
 static int  prev_kanji(), prev_hinsi(), prev_douon();
 static int  next_kanji(), next_hinsi(), next_douon();
-static void set_kanji(), set_buf(), add_yomi();
+static void set_kanji(), set_buf(u_char*), add_yomi();
 static void set_idxyomi();
 
 static void cd2sjh_chr(u_char ch, u_char* dst);
diff --git a/lib/sj3core/sdepend.c b/lib/sj3core/sdepend.c
index f5e4dd0..dd1aade 100644
--- a/lib/sj3core/sdepend.c
+++ b/lib/sj3core/sdepend.c
@@ -294,10 +294,10 @@ opendict(char* name, char* passwd) {
 	dfp->dict.seglen  = get4byte(dp + DICTSEGLEN);
 	dfp->dict.segunit = get4byte(dp + DICTSEGNUM);
 	dfp->dict.maxunit = i ? get4byte(dp + DICTSEGMAX) : 0;
-	dfp->dict.getofs  = getofs;
-	dfp->dict.getidx  = getidx;
+	dfp->dict.getofs  = (IFuncDict)getofs;
+	dfp->dict.getidx  = (IFuncDict)getidx;
 	dfp->dict.getdic  = (IFunc)getdic;
-	dfp->dict.putidx  = putidx;
+	dfp->dict.putidx  = (IFunc)putidx;
 	dfp->dict.putdic  = (IFunc)putdic;
 	dfp->dict.rszdic  = (IFunc)rszdic;
 	dfp->refcnt	  = 1;
diff --git a/lib/sj3core/setkouho.c b/lib/sj3core/setkouho.c
index 500ac5e..cda2489 100644
--- a/lib/sj3core/setkouho.c
+++ b/lib/sj3core/setkouho.c
@@ -39,7 +39,7 @@
 
 #include "sj_kanakan.h"
 
-static int hiraknj();
+static int hiraknj(u_char*);
 
 void setkouho(CLREC* clrec, TypeDicOfs offs, int mode) {
 	JREC*	jrec;
diff --git a/lib/sj3core/srchnum.c b/lib/sj3core/srchnum.c
index 65028b6..ccaf6ea 100644
--- a/lib/sj3core/srchnum.c
+++ b/lib/sj3core/srchnum.c
@@ -41,7 +41,7 @@
 
 #include "sj_kanakan.h"
 
-static void srch_kurai1(), srch_kurai2();
+static void srch_kurai1(u_char*, u_char*), srch_kurai2(u_char*, u_char*);
 
 static void
 srch_josuu_sub(JREC* jrec, TypeGram gram) {