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include "../lib/parser.h"
include "../lib/preval.h"
# PH_SETEQN -- Determine whether a PHOTCAL expression includes any set
# equations which contain references to catalog variables. Return a YES
# or NO status.
int procedure ph_seteqn (code)
pointer code # the photcal equation code
int ip, ins
pointer setcode
int pr_geti(), pr_gsym(), ph_cateqn()
pointer pr_gsymp()
begin
# Return NO if there are no defined set equations.
if (pr_geti (NSETEQS) <= 0)
return (NO)
# Initialize.
ip = 0
ins = Memi[code+ip]
# Loop over the equation parsing instructions.
while (ins != PEV_EOC) {
switch (ins) {
case PEV_SETEQ:
ip = ip + 1
setcode = pr_gsymp (pr_gsym (Memi[code+ip], PTY_SETEQ),
PSEQRPNEQ)
if (ph_cateqn (setcode) == YES)
return (YES)
case PEV_NUMBER, PEV_CATVAR, PEV_OBSVAR, PEV_PARAM:
ip = ip + 1
case PEV_EXTEQ, PEV_TRNEQ:
ip = ip + 1
default:
# do nothing
}
ip = ip + 1
ins = Memi[code+ip]
}
return (NO)
end
# PH_CATEQN -- Given a PHOTCAL set equation determine whether there are any
# references in it to catalog variables. Return a YES or NO status.
int procedure ph_cateqn (code)
pointer code # pointer to the equation code
int ip, ins
int pr_geti()
begin
# Return NO if there are no catalog variables.
if (pr_geti (NCATVARS) <= 0)
return (NO)
# Initialize.
ip = 0
ins = Memi[code+ip]
# Loop over the equation parsing instructions.
while (ins != PEV_EOC) {
switch (ins) {
case PEV_CATVAR:
return (YES)
case PEV_NUMBER, PEV_OBSVAR, PEV_PARAM:
ip = ip + 1
case PEV_SETEQ, PEV_EXTEQ, PEV_TRNEQ:
ip = ip + 1
default:
# do nothing
}
ip = ip + 1
ins = Memi[code+ip]
}
return (NO)
end
# PH_SETVAR -- Check to see whether the fit expression portion of a PHOTCAL
# transformation equation contains references to set equations which include
# previously unreferenced catalog variables. Return the number of previously
# unreferenced set equations.
int procedure ph_setvar (eqn, sym, cmap, omap, tuservars, uservars, usererrs,
nstdvars, nobsvars, eqset, maxnset, userset, nset)
int eqn # the equation number
pointer sym # pointer to the equation symbol
pointer cmap # pointer to catalog variable column map
pointer omap # pointer to observations variable column map
int tuservars[nstdvars,ARB] # list of active catalog variables per equation
int uservars[ARB] # list of active catalog variables
int usererrs[ARB] # list of active observational error columns
int nstdvars # total number of catalog variables
int nobsvars # total number of observations variables
int eqset[maxnset,ARB] # set equation table
int maxnset # maximum number of set equations
int userset[ARB] # the list of active set equations
int nset # number of set equations
bool new
int i, ip, ins, nvar
pointer fitcode, setsym
int pr_gsym(), ph_catvar()
pointer pr_gsymp()
begin
# Get the fit expression symbols.
fitcode = pr_gsymp (sym, PTEQRPNFIT)
# Initialize.
nvar = 0
ip = 0
ins = Memi[fitcode+ip]
# Loop over the fit expression.
while (ins != PEV_EOC) {
switch (ins) {
case PEV_SETEQ:
ip = ip + 1
setsym = pr_gsym (Memi[fitcode+ip], PTY_SETEQ)
if (ph_catvar (eqn, setsym, cmap, omap, tuservars, uservars,
usererrs, nstdvars, nobsvars) == YES) {
new = true
do i = 1, nset + nvar {
if (setsym != userset[i])
next
eqset[i,eqn] = setsym
new = false
break
}
if (new) {
nvar = nvar + 1
eqset[nset+nvar,eqn] = setsym
userset[nset+nvar] = setsym
}
}
case PEV_NUMBER, PEV_CATVAR, PEV_OBSVAR, PEV_PARAM:
ip = ip + 1
case PEV_EXTEQ, PEV_TRNEQ:
ip = ip + 1
default:
# do nothing
}
ip = ip + 1
ins = Memi[fitcode+ip]
}
return (nvar)
end
# PH_CATVAR -- Determine whether any catalog variables in the set
# equation have not been previously referenced in the transformation
# equations.
int procedure ph_catvar (eqn, setsym, cmap, omap, tuservars, uservars,
usererrs, nstdvars, nobsvars)
int eqn # the transformation equation number
int setsym # the set equation symbol
pointer cmap # pointer to catalog variable column map
pointer omap # pointer to observations variable column map
int tuservars[nstdvars,ARB] # active variables as a function of eqn
int uservars[ARB] # currently active catalog variables
int usererrs[ARB] # currently active observations varaiables errs
int nstdvars # the total number of catalog variables
int nobsvars # the total number of observations variables
int setcode, ip, ins, stat, vcol, ecol
pointer catsym, obsym
int pr_gsym(), pr_gsymi(), pr_findmap1()
pointer pr_gsymp()
begin
# Get the set equation code.
setcode = pr_gsymp (setsym, PSEQRPNEQ)
# Initialize.
ip = 0
ins = Memi[setcode+ip]
stat = NO
while (ins != PEV_EOC) {
switch (ins) {
case PEV_CATVAR:
ip = ip + 1
catsym = pr_gsym (Memi[setcode+ip] - nobsvars, PTY_CATVAR)
vcol = pr_gsymi (catsym, PINPCOL)
vcol = pr_findmap1 (cmap, vcol)
if (uservars[vcol] <= 0) {
tuservars[vcol,eqn] = -(vcol + nobsvars)
uservars[vcol] = -(vcol + nobsvars)
stat = YES
}
case PEV_OBSVAR:
ip = ip + 1
obsym = pr_gsym (Memi[setcode+ip], PTY_OBSVAR)
vcol = pr_gsymi (obsym, PINPCOL)
ecol = pr_gsymi (obsym, PINPERRCOL)
vcol = pr_findmap1 (omap, vcol)
if (! IS_INDEFI(ecol))
ecol = pr_findmap1 (omap, ecol)
if (! IS_INDEFI(ecol))
usererrs[vcol] = ecol
case PEV_NUMBER, PEV_PARAM:
ip = ip + 1
case PEV_SETEQ, PEV_EXTEQ, PEV_TRNEQ:
ip = ip + 1
default:
# do nothing
}
ip = ip + 1
ins = Memi[setcode+ip]
}
return (stat)
end
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