blp@blp:~/pspp/testing/src/expressions(0)$ grep unimpl operations.def
function NCDF.CHISQ (x >= 0, df > 0, c) = unimplemented;
function NPDF.CHISQ (x >= 0, df > 0, c) = unimplemented;
function NCDF.F (x >= 0, df1 > 0, df2 > 0, lambda >= 0) = unimplemented;
function NPDF.F (x >= 0, df1 > 0, df2 > 0, lmabda >= 0) = unimplemented;
function CDF.HALFNRM (x, a, b > 0) = unimplemented;
function IDF.HALFNRM (P > 0 && P < 1, a, b > 0) = unimplemented;
function PDF.HALFNRM (x, a, b > 0) = unimplemented;
no_opt function RV.HALFNRM (a, b > 0) = unimplemented;
function CDF.IGAUSS (x > 0, a > 0, b > 0) = unimplemented;
function IDF.IGAUSS (P >= 0 && P < 1, a > 0, b > 0) = unimplemented;
function PDF.IGAUSS (x > 0, a > 0, b > 0) = unimplemented;
no_opt function RV.IGAUSS (a > 0, b > 0) = unimplemented;
function CDF.SMOD (x > 0, a >= 1, b >= 1) = unimplemented;
function IDF.SMOD (P >= 0 && P < 1, a >= 1, b >= 1) = unimplemented;
function CDF.SRANGE (x > 0, a >= 1, b >= 1) = unimplemented;
function IDF.SRANGE (P >= 0 && P < 1, a >= 1, b >= 1) = unimplemented;
function NCDF.T (x, df > 0, nc) = unimplemented;
function NPDF.T (x, df > 0, nc) = unimplemented;
