strtoIg
extern int strtoIg ANSI((CONST char*, char**, CONST FPI*, Long*, Bigint**, int*));
k = strtoIg(s, sp, &fpi, exp, B, rv);
k = strtoIg(s, sp, &fpi, exp, B, rv);
k = strtoIg(s, sp, &fpi, exp, B, rv);
k = strtoIg(s, sp, &fpi, exp, B, rv);
strtoIg(CONST char *s00, char **se, CONST FPI *fpi, Long *exp, Bigint **B, int *rvp)
k = strtoIg(s, sp, &fpi, exp, B, rv);
k = strtoIg(s, sp, &fpi, exp, B, rv);