.SH NAME .SH SYNOPSIS .TP 17 double precision function dcabs1(z) .TP 17 .ti +4 double complex z,zz .TP 17 .ti +4 double precision t(2) .TP 17 .ti +4 equivalence (zz,t(1)) .TP 17 .ti +4 zz = z .TP 17 .ti +4 dcabs1 = dabs(t(1)) + dabs(t(2)) .TP 17 .ti +4 return .TP 17 .ti +4 end .SH PURPOSE