Hi All: I don't know if I'm wrong, but why are not defined elsewhere cln::operator-(const float , const cln::cl_R&) and some with double, etc. to compile this silly program. #include <cln/real.h> int main(int argc, char **argv) { cln::cl_F a,b; a=1; b=1.0-a; } -- *************************************************************************** * Dr. Isidro Cachadiña Gutiérrez * * Departamento de Física * * Facultad de Ciencias * * Universidad de Extremadura * * 06071 Badajoz ( SPAIN ) * * email: icacha@unex.es * * Teléfono: +34 924 289 300 Ext. 6826 Fax: +34 924 289 651 * *************************************************************************** * Usuario Linux: 8569 * * Para clave pública GnuPG: http://onsager.unex.es/firma.pub.asc * ***************************************************************************