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include "tbtables.h"
# tbzi2d -- convert integer column to double
# When reading a text table into memory, if a floating-point value is
# found in a column of type integer, this routine may be called to convert
# the data type to double precision.
#
# Phil Hodge, 7-Jun-1994 Subroutine created.
# Phil Hodge, 10-Aug-1994 Update COL_LEN.
procedure tbzi2d (tp, cp)
pointer tp # i: pointer to table descriptor
pointer cp # i: pointer to column descriptor
#--
pointer new # pointer to new memory for column data
int row # row number
errchk malloc
begin
# Allocate memory for the array of doubles.
call malloc (new, TB_ALLROWS(tp), TY_DOUBLE)
# Copy each row.
do row = 1, TB_NROWS(tp) {
if (IS_INDEFI(Memi[COL_OFFSET(cp)+row-1])) {
Memd[new+row-1] = INDEFD
} else {
Memd[new+row-1] = Memi[COL_OFFSET(cp) + row - 1]
}
}
# Free the old memory, and save the new pointer.
call mfree (COL_OFFSET(cp), TY_INT)
COL_OFFSET(cp) = new
# Specify the new data type and length.
COL_DTYPE(cp) = TBL_TY_DOUBLE
COL_LEN(cp) = SZ_DOUBLE
end
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