49 big5_0_mbtowc (conv_t conv, ucs4_t *pwc, 
const unsigned char *s, 
int n)
    51   unsigned char c1 = s[0];
    52   if (c1 >= 0x21 && c1 <= 0x62) {
    54       unsigned char c2 = s[1];
    55       if (c2 >= 0x21 && c2 <= 0x7e) {
    56         unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
    60           buf[0] = (i / 157) + 0xa1;
    62           buf[1] = i + (i < 0x3f ? 0x40 : 0x62);
    63           return big5_mbtowc(conv,pwc,buf,2);
    67             unsigned short wc = big5_2uni_pagea1[i];
    83 big5_1_mbtowc (conv_t conv, ucs4_t *pwc, 
const unsigned char *s, 
int n)
    85   unsigned char c1 = s[0];
    86   if (c1 >= 0x21 && c1 <= 0x72) {
    88       unsigned char c2 = s[1];
    89       if (c2 >= 0x21 && c2 <= 0x7e) {
    90         unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
    94           buf[0] = (i / 157) + 0xc9;
    96           buf[1] = i + (i < 0x3f ? 0x40 : 0x62);
    97           return big5_mbtowc(conv,pwc,buf,2);
   101             unsigned short wc = big5_2uni_pagec9[i];
   111     return RET_TOOFEW(0);
   117 big5_0_wctomb (conv_t conv, 
unsigned char *r, ucs4_t wc, 
int n)
   120     unsigned char buf[2];
   121     int ret = big5_wctomb(conv,buf,wc,2);
   122     if (ret != RET_ILSEQ) {
   123       unsigned char s1, s2;
   124       if (ret != 2) abort();
   127       if (!(s1 >= 0xa1)) abort();
   128       if (!((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0xa1 && s2 <= 0xfe))) abort();
   130         unsigned int t = 157 * (s1 - 0xa1) + s2 - (s2 < 0x80 ? 0x40 : 0x62);
   131         r[0] = (t / 94) + 0x21;
   132         r[1] = (t % 94) + 0x21;
   142 big5_1_wctomb (conv_t conv, 
unsigned char *r, ucs4_t wc, 
int n)
   145     unsigned char buf[2];
   146     int ret = big5_wctomb(conv,buf,wc,2);
   147     if (ret != RET_ILSEQ) {
   148       unsigned char s1, s2;
   149       if (ret != 2) abort();
   152       if (!(s1 <= 0xf9)) abort();
   153       if (!((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0xa1 && s2 <= 0xfe))) abort();
   155         unsigned int t = 157 * (s1 - 0xc9) + s2 - (s2 < 0x80 ? 0x40 : 0x62);
   156         r[0] = (t / 94) + 0x21;
   157         r[1] = (t % 94) + 0x21;