The program runs when I define "bigF = cln_R", but I get errors when I set "bigF = cln_F" I found that the exponential function only gives many digits of precision when I use cln_F. I am attaching my program and the out put is below: fuji:rama joshua$ make g++ -DHAVE_CONFIG_H -I. -I../include -I../include -g -O2 -MT e.o -MD -MP -MF .deps/e.Tpo -c -o e.o e.cc In file included from /usr/include/c++/4.0.0/backward/iostream.h:31, from e.cc:1: /usr/include/c++/4.0.0/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <iostream> instead of the deprecated header <iostream.h>. To disable this warning use -Wno-deprecated. e.cc: In function ‘bigF h(bigF, bigF*, int, int, int)’: e.cc:233: error: conversion from ‘const cln::cl_N’ to non-scalar type ‘bigF’ requested e.cc: In function ‘bigF ff(bigF, bigF, bigF*, int, int, int)’: e.cc:251: error: no match for ‘operator=’ in ‘q = cln::operator*(const cln::cl_R&, const cln::cl_R&)(((const cln::cl_R&)(& cln::exp(const cln::cl_R&)())))’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:258: error: conversion from ‘const cln::cl_N’ to non-scalar type ‘bigF’ requested e.cc: In function ‘bigF v(bigF, bigF*, int, int, int)’: e.cc:275: error: conversion from ‘int’ to ‘cln::cl_F’ is ambiguous ../include/cln/float_class.h:38: note: candidates are: cln::cl_F::cl_F(cln::cl_anything*) ../include/cln/float_class.h:26: note: cln::cl_F::cl_F(const char*) ../include/cln/float_class.h:48: note: cln::cl_F::cl_F(double) ../include/cln/float_class.h:47: note: cln::cl_F::cl_F(float) e.cc:276: error: conversion from ‘int’ to ‘cln::cl_F’ is ambiguous ../include/cln/float_class.h:38: note: candidates are: cln::cl_F::cl_F(cln::cl_anything*) <near match> ../include/cln/float_class.h:26: note: cln::cl_F::cl_F(const char*) <near match> ../include/cln/float_class.h:48: note: cln::cl_F::cl_F(double) ../include/cln/float_class.h:47: note: cln::cl_F::cl_F(float) e.cc:281: error: no match for ‘operator=’ in ‘w = cln::operator*(const cln::cl_R&, const cln::cl_R&)(((const cln::cl_R&)((const cln::cl_R*)(& w.cln::cl_F::<anonymous>))))’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:283: error: ambiguous overload for ‘operator=’ in ‘q = 0’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:289: error: no match for ‘operator=’ in ‘q = cln::operator*(const cln::cl_R&, const cln::cl_R&)(((const cln::cl_R&)(& cln::exp(const cln::cl_R&)())))’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:294: error: conversion from ‘const cln::cl_N’ to non-scalar type ‘bigF’ requested e.cc: In function ‘bigF integralH(bigF*, int, int, int, int)’: e.cc:312: error: ambiguous overload for ‘operator=’ in ‘aa = 1’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:313: error: ambiguous overload for ‘operator=’ in ‘b = 20’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:317: error: conversion from ‘int’ to ‘cln::cl_F’ is ambiguous ../include/cln/float_class.h:38: note: candidates are: cln::cl_F::cl_F(cln::cl_anything*) ../include/cln/float_class.h:26: note: cln::cl_F::cl_F(const char*) ../include/cln/float_class.h:48: note: cln::cl_F::cl_F(double) ../include/cln/float_class.h:47: note: cln::cl_F::cl_F(float) e.cc:320: error: ambiguous overload for ‘operator=’ in ‘w = 0’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:321: error: conversion from ‘int’ to ‘cln::cl_F’ is ambiguous ../include/cln/float_class.h:38: note: candidates are: cln::cl_F::cl_F(cln::cl_anything*) <near match> ../include/cln/float_class.h:26: note: cln::cl_F::cl_F(const char*) <near match> ../include/cln/float_class.h:48: note: cln::cl_F::cl_F(double) ../include/cln/float_class.h:47: note: cln::cl_F::cl_F(float) e.cc: In function ‘bigF integralL(bigF*, int, int, int, int)’: e.cc:339: error: ambiguous overload for ‘operator=’ in ‘b = 1’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) e.cc:346: error: ambiguous overload for ‘operator=’ in ‘w = 0’ ../include/cln/float_class.h:40: note: candidates are: cln::cl_F& cln::cl_F::operator=(const cln::cl_F&) ../include/cln/float_class.h:47: note: cln::cl_F& cln::cl_F::operator=(float) ../include/cln/float_class.h:48: note: cln::cl_F& cln::cl_F::operator=(double) make: *** [e.o] Error 1 fuji:rama joshua$ make -- Joshua Friedman PhD CrownEagle@gmail.com http://www.math.sunysb.edu/~joshua