6 unit_chk (integer Unit, char *who)
8 if (Unit >= MXUNIT || Unit < 0)
10 return f__units[Unit].ufd;
14 G77_ftell_0 (integer * Unit)
17 return (f = unit_chk (*Unit, "ftell")) ? (integer) FTELL (f) : -1L;
21 G77_fseek_0 (integer * Unit, integer * offset, integer * xwhence)
24 int w = (int) *xwhence;
26 static int wohin[3] = { SEEK_SET, SEEK_CUR, SEEK_END };
33 return !(f = unit_chk (*Unit, "fseek"))
34 || FSEEK (f, (off_t) * offset, w) ? 1 : 0;