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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
# FSTDFILE -- Determine if the named file is a standard stream, and if so,
# return its file descriptor.
int procedure fstdfile (fname, ofd)
char fname[ARB]
int ofd
bool streq()
begin
ofd = NULL
if (fname[1] != 'S' || fname[2] != 'T') {
return (NO)
} else if (streq (fname, "STDIN")) {
ofd = STDIN
return (YES)
} else if (streq (fname, "STDOUT")) {
ofd = STDOUT
return (YES)
} else if (streq (fname, "STDERR")) {
ofd = STDERR
return (YES)
} else if (streq (fname, "STDGRAPH")) {
ofd = STDGRAPH
return (YES)
} else if (streq (fname, "STDIMAGE")) {
ofd = STDIMAGE
return (YES)
} else if (streq (fname, "STDPLOT")) {
ofd = STDPLOT
return (YES)
} else
return (NO)
end
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