libf2c/libI77/fmtlib.c

   1 /*      @(#)fmtlib.c    1.2     */
   2 #define MAXINTLENGTH 23
   3 #include "config.h"
   4
   5 #include "f2c.h"
   6 #ifndef Allow_TYQUAD
   7 #undef longint
   8 #define longint long
   9 #undef ulongint
  10 #define ulongint unsigned long
  11 #endif
  12
  13 #ifdef KR_headers
  14 char *f__icvt(value,ndigit,sign, base) longint value; int *ndigit,*sign;
  15  register int base;
  16 #else
  17 char *f__icvt(longint value, int *ndigit, int *sign, int base)
  18 #endif
  19 {
  20         static char buf[MAXINTLENGTH+1];
  21         register int i;
  22         ulongint uvalue;
  23
  24         if(value > 0) {
  25                 uvalue = value;
  26                 *sign = 0;
  27                 }
  28         else if (value < 0) {
  29                 uvalue = -value;
  30                 *sign = 1;
  31                 }
  32         else {
  33                 *sign = 0;
  34                 *ndigit = 1;
  35                 buf[MAXINTLENGTH-1] = '0';
  36                 return &buf[MAXINTLENGTH-1];
  37                 }
  38         i = MAXINTLENGTH;
  39         do {
  40                 buf[--i] = (uvalue%base) + '0';
  41                 uvalue /= base;
  42                 }
  43                 while(uvalue > 0);
  44         *ndigit = MAXINTLENGTH - i;
  45         return &buf[i];
  46         }