mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-23 17:19:21 +08:00
477 lines
8.1 KiB
C
477 lines
8.1 KiB
C
#include <ctype.h>
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#include "f2c.h"
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#include "fio.h"
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extern int f__cursor;
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#ifdef KR_headers
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extern double atof();
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#else
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#undef abs
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#undef min
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#undef max
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#include <stdlib.h>
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#endif
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#include "fmt.h"
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#include "fp.h"
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static int
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#ifdef KR_headers
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rd_Z(n,w,len) Uint *n; ftnlen len;
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#else
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rd_Z(Uint *n, int w, ftnlen len)
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#endif
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{
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long x[9];
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char *s, *s0, *s1, *se, *t;
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int ch, i, w1, w2;
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static char hex[256];
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static int one = 1;
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int bad = 0;
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if (!hex['0']) {
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s = "0123456789";
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while(ch = *s++)
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hex[ch] = ch - '0' + 1;
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s = "ABCDEF";
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while(ch = *s++)
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hex[ch] = hex[ch + 'a' - 'A'] = ch - 'A' + 11;
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}
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s = s0 = (char *)x;
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s1 = (char *)&x[4];
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se = (char *)&x[8];
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if (len > 4*sizeof(long))
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return errno = 117;
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while (w) {
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GET(ch);
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if (ch==',' || ch=='\n')
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break;
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w--;
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if (ch > ' ') {
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if (!hex[ch & 0xff])
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bad++;
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*s++ = ch;
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if (s == se) {
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/* discard excess characters */
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for(t = s0, s = s1; t < s1;)
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*t++ = *s++;
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s = s1;
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}
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}
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}
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if (bad)
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return errno = 115;
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w = (int)len;
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w1 = s - s0;
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w2 = w1+1 >> 1;
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t = (char *)n;
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if (*(char *)&one) {
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/* little endian */
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t += w - 1;
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i = -1;
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}
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else
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i = 1;
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for(; w > w2; t += i, --w)
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*t = 0;
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if (!w)
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return 0;
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if (w < w2)
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s0 = s - (w << 1);
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else if (w1 & 1) {
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*t = hex[*s0++ & 0xff] - 1;
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if (!--w)
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return 0;
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t += i;
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}
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do {
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*t = hex[*s0 & 0xff]-1 << 4 | hex[s0[1] & 0xff]-1;
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t += i;
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s0 += 2;
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}
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while(--w);
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return 0;
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}
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static int
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#ifdef KR_headers
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rd_I(n,w,len, base) Uint *n; int w; ftnlen len; register int base;
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#else
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rd_I(Uint *n, int w, ftnlen len, register int base)
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#endif
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{ longint x;
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int sign,ch;
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char s[84], *ps;
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ps=s; x=0;
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while (w)
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{
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GET(ch);
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if (ch==',' || ch=='\n') break;
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*ps=ch; ps++; w--;
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}
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*ps='\0';
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ps=s;
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while (*ps==' ') ps++;
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if (*ps=='-') { sign=1; ps++; }
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else { sign=0; if (*ps=='+') ps++; }
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loop: while (*ps>='0' && *ps<='9') { x=x*base+(*ps-'0'); ps++; }
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if (*ps==' ') {if (f__cblank) x *= base; ps++; goto loop;}
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if(sign) x = -x;
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if(len==sizeof(integer)) n->il=x;
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else if(len == sizeof(char)) n->ic = (char)x;
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#ifdef Allow_TYQUAD
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else if (len == sizeof(longint)) n->ili = x;
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#endif
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else n->is = (short)x;
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if (*ps) return(errno=115); else return(0);
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}
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static int
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#ifdef KR_headers
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rd_L(n,w,len) ftnint *n; ftnlen len;
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#else
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rd_L(ftnint *n, int w, ftnlen len)
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#endif
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{ int ch, lv;
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char s[84], *ps;
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ps=s;
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while (w) {
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GET(ch);
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if (ch==','||ch=='\n') break;
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*ps=ch;
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ps++; w--;
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}
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*ps='\0';
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ps=s; while (*ps==' ') ps++;
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if (*ps=='.') ps++;
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if (*ps=='t' || *ps == 'T')
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lv = 1;
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else if (*ps == 'f' || *ps == 'F')
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lv = 0;
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else return(errno=116);
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switch(len) {
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case sizeof(char): *(char *)n = (char)lv; break;
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case sizeof(short): *(short *)n = (short)lv; break;
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default: *n = lv;
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}
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return 0;
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}
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static int
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#ifdef KR_headers
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rd_F(p, w, d, len) ufloat *p; ftnlen len;
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#else
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rd_F(ufloat *p, int w, int d, ftnlen len)
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#endif
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{
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char s[FMAX+EXPMAXDIGS+4];
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register int ch;
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register char *sp, *spe, *sp1;
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double x;
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int scale1, se;
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long e, exp;
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sp1 = sp = s;
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spe = sp + FMAX;
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exp = -d;
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x = 0.;
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do {
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GET(ch);
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w--;
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} while (ch == ' ' && w);
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switch(ch) {
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case '-': *sp++ = ch; sp1++; spe++;
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case '+':
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if (!w) goto zero;
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--w;
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GET(ch);
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}
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while(ch == ' ') {
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blankdrop:
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if (!w--) goto zero; GET(ch); }
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while(ch == '0')
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{ if (!w--) goto zero; GET(ch); }
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if (ch == ' ' && f__cblank)
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goto blankdrop;
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scale1 = f__scale;
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while(isdigit(ch)) {
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digloop1:
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if (sp < spe) *sp++ = ch;
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else ++exp;
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digloop1e:
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if (!w--) goto done;
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GET(ch);
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}
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if (ch == ' ') {
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if (f__cblank)
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{ ch = '0'; goto digloop1; }
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goto digloop1e;
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}
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if (ch == '.') {
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exp += d;
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if (!w--) goto done;
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GET(ch);
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if (sp == sp1) { /* no digits yet */
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while(ch == '0') {
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skip01:
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--exp;
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skip0:
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if (!w--) goto done;
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GET(ch);
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}
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if (ch == ' ') {
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if (f__cblank) goto skip01;
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goto skip0;
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}
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}
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while(isdigit(ch)) {
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digloop2:
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if (sp < spe)
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{ *sp++ = ch; --exp; }
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digloop2e:
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if (!w--) goto done;
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GET(ch);
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}
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if (ch == ' ') {
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if (f__cblank)
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{ ch = '0'; goto digloop2; }
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goto digloop2e;
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}
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}
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switch(ch) {
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default:
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break;
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case '-': se = 1; goto signonly;
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case '+': se = 0; goto signonly;
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case 'e':
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case 'E':
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case 'd':
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case 'D':
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if (!w--)
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goto bad;
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GET(ch);
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while(ch == ' ') {
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if (!w--)
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goto bad;
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GET(ch);
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}
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se = 0;
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switch(ch) {
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case '-': se = 1;
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case '+':
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signonly:
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if (!w--)
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goto bad;
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GET(ch);
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}
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while(ch == ' ') {
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if (!w--)
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goto bad;
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GET(ch);
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}
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if (!isdigit(ch))
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goto bad;
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e = ch - '0';
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for(;;) {
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if (!w--)
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{ ch = '\n'; break; }
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GET(ch);
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if (!isdigit(ch)) {
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if (ch == ' ') {
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if (f__cblank)
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ch = '0';
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else continue;
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}
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else
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break;
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}
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e = 10*e + ch - '0';
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if (e > EXPMAX && sp > sp1)
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goto bad;
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}
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if (se)
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exp -= e;
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else
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exp += e;
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scale1 = 0;
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}
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switch(ch) {
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case '\n':
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case ',':
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break;
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default:
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bad:
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return (errno = 115);
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}
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done:
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if (sp > sp1) {
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while(*--sp == '0')
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++exp;
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if (exp -= scale1)
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sprintf(sp+1, "e%ld", exp);
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else
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sp[1] = 0;
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x = atof(s);
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}
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zero:
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if (len == sizeof(real))
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p->pf = x;
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else
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p->pd = x;
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return(0);
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}
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static int
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#ifdef KR_headers
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rd_A(p,len) char *p; ftnlen len;
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#else
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rd_A(char *p, ftnlen len)
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#endif
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{ int i,ch;
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for(i=0;i<len;i++)
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{ GET(ch);
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*p++=VAL(ch);
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}
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return(0);
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}
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static int
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#ifdef KR_headers
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rd_AW(p,w,len) char *p; ftnlen len;
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#else
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rd_AW(char *p, int w, ftnlen len)
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#endif
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{ int i,ch;
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if(w>=len)
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{ for(i=0;i<w-len;i++)
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GET(ch);
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for(i=0;i<len;i++)
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{ GET(ch);
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*p++=VAL(ch);
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}
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return(0);
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}
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for(i=0;i<w;i++)
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{ GET(ch);
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*p++=VAL(ch);
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}
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for(i=0;i<len-w;i++) *p++=' ';
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return(0);
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}
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static int
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#ifdef KR_headers
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rd_H(n,s) char *s;
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#else
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rd_H(int n, char *s)
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#endif
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{ int i,ch;
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for(i=0;i<n;i++)
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if((ch=(*f__getn)())<0) return(ch);
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else *s++ = ch=='\n'?' ':ch;
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return(1);
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}
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static int
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#ifdef KR_headers
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rd_POS(s) char *s;
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#else
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rd_POS(char *s)
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#endif
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{ char quote;
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int ch;
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quote= *s++;
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for(;*s;s++)
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if(*s==quote && *(s+1)!=quote) break;
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else if((ch=(*f__getn)())<0) return(ch);
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else *s = ch=='\n'?' ':ch;
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return(1);
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}
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#ifdef KR_headers
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rd_ed(p,ptr,len) struct syl *p; char *ptr; ftnlen len;
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#else
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rd_ed(struct syl *p, char *ptr, ftnlen len)
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#endif
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{ int ch;
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for(;f__cursor>0;f__cursor--) if((ch=(*f__getn)())<0) return(ch);
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if(f__cursor<0)
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{ if(f__recpos+f__cursor < 0) /*err(elist->cierr,110,"fmt")*/
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f__cursor = -f__recpos; /* is this in the standard? */
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if(f__external == 0) {
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extern char *f__icptr;
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f__icptr += f__cursor;
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}
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else if(f__curunit && f__curunit->useek)
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(void) fseek(f__cf,(long) f__cursor,SEEK_CUR);
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else
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err(f__elist->cierr,106,"fmt");
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f__recpos += f__cursor;
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f__cursor=0;
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}
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switch(p->op)
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{
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default: fprintf(stderr,"rd_ed, unexpected code: %d\n", p->op);
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sig_die(f__fmtbuf, 1);
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case IM:
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case I: ch = rd_I((Uint *)ptr,p->p1,len, 10);
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break;
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/* O and OM don't work right for character, double, complex, */
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/* or doublecomplex, and they differ from Fortran 90 in */
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/* showing a minus sign for negative values. */
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case OM:
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case O: ch = rd_I((Uint *)ptr, p->p1, len, 8);
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break;
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case L: ch = rd_L((ftnint *)ptr,p->p1,len);
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break;
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case A: ch = rd_A(ptr,len);
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break;
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case AW:
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ch = rd_AW(ptr,p->p1,len);
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break;
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case E: case EE:
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case D:
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case G:
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case GE:
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case F: ch = rd_F((ufloat *)ptr,p->p1,p->p2.i[0],len);
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break;
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/* Z and ZM assume 8-bit bytes. */
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case ZM:
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case Z:
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ch = rd_Z((Uint *)ptr, p->p1, len);
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break;
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}
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if(ch == 0) return(ch);
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else if(ch == EOF) return(EOF);
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if (f__cf)
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clearerr(f__cf);
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return(errno);
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}
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#ifdef KR_headers
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rd_ned(p) struct syl *p;
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#else
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rd_ned(struct syl *p)
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#endif
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{
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switch(p->op)
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{
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default: fprintf(stderr,"rd_ned, unexpected code: %d\n", p->op);
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sig_die(f__fmtbuf, 1);
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case APOS:
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return(rd_POS(p->p2.s));
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case H: return(rd_H(p->p1,p->p2.s));
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case SLASH: return((*f__donewrec)());
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case TR:
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case X: f__cursor += p->p1;
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return(1);
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case T: f__cursor=p->p1-f__recpos - 1;
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return(1);
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case TL: f__cursor -= p->p1;
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if(f__cursor < -f__recpos) /* TL1000, 1X */
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f__cursor = -f__recpos;
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return(1);
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}
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}
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