Float64.cc

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00001 
00002 // -*- mode: c++; c-basic-offset:4 -*-
00003 
00004 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
00005 // Access Protocol.
00006 
00007 // Copyright (c) 2002,2003 OPeNDAP, Inc.
00008 // Author: James Gallagher <jgallagher@opendap.org>
00009 //
00010 // This library is free software; you can redistribute it and/or
00011 // modify it under the terms of the GNU Lesser General Public
00012 // License as published by the Free Software Foundation; either
00013 // version 2.1 of the License, or (at your option) any later version.
00014 //
00015 // This library is distributed in the hope that it will be useful,
00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 //
00024 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
00025 
00026 // (c) COPYRIGHT URI/MIT 1994-1999
00027 // Please read the full copyright statement in the file COPYRIGHT_URI.
00028 //
00029 // Authors:
00030 //      jhrg,jimg       James Gallagher <jgallagher@gso.uri.edu>
00031 
00032 // Implementation for Float64.
00033 //
00034 // jhrg 9/7/94
00035 
00036 #include <iomanip>
00037 
00038 #include "config.h"
00039 
00040 static char rcsid[] not_used =
00041     {"$Id: Float64.cc 19948 2008-12-03 23:51:12Z jimg $"
00042     };
00043 
00044 #include <iomanip>
00045 
00046 #include "Float64.h"
00047 #include "DDS.h"
00048 #include "util.h"
00049 #include "parser.h"
00050 #include "Operators.h"
00051 #include "dods-limits.h"
00052 #include "InternalErr.h"
00053 
00054 
00055 using std::cerr;
00056 using std::endl;
00057 
00058 namespace libdap {
00059 
00068 Float64::Float64(const string &n)
00069         : BaseType(n, dods_float64_c)
00070 {}
00071 
00079 Float64::Float64(const string &n, const string &d)
00080         : BaseType(n, d, dods_float64_c)
00081 {}
00082 
00083 Float64::Float64(const Float64 &copy_from) : BaseType(copy_from)
00084 {
00085     _buf = copy_from._buf;
00086 }
00087 
00088 BaseType *
00089 Float64::ptr_duplicate()
00090 {
00091     return new Float64(*this);
00092 }
00093 
00094 Float64 &
00095 Float64::operator=(const Float64 &rhs)
00096 {
00097     if (this == &rhs)
00098         return *this;
00099 
00100     dynamic_cast<BaseType &>(*this) = rhs;
00101 
00102     _buf = rhs._buf;
00103 
00104     return *this;
00105 }
00106 
00107 unsigned int
00108 Float64::width()
00109 {
00110     return sizeof(dods_float64);
00111 }
00112 
00113 bool
00114 Float64::serialize(ConstraintEvaluator &eval, DDS &dds,
00115                    Marshaller &m, bool ce_eval)
00116 {
00117     dds.timeout_on();
00118 
00119     if (!read_p())
00120         read();  // read() throws Error and InternalErr
00121 
00122 #if EVAL
00123     if (ce_eval && !eval.eval_selection(dds, dataset()))
00124         return true;
00125 #endif
00126 
00127     dds.timeout_off();
00128 
00129     m.put_float64( _buf ) ;
00130 
00131     return true;
00132 }
00133 
00134 bool
00135 Float64::deserialize(UnMarshaller &um, DDS *, bool)
00136 {
00137     um.get_float64( _buf ) ;
00138 
00139     return false;
00140 }
00141 
00142 unsigned int
00143 Float64::val2buf(void *val, bool)
00144 {
00145     // Jose Garcia
00146     // This method is public therefore and I believe it has being designed
00147     // to be use by read which must be implemented on the surrogated library,
00148     // thus if the pointer val is NULL, is an Internal Error.
00149     if (!val)
00150         throw InternalErr(__FILE__, __LINE__,
00151                           "The incoming pointer does not contain any data.");
00152 
00153     _buf = *(dods_float64 *)val;
00154 
00155     return width();
00156 }
00157 
00158 unsigned int
00159 Float64::buf2val(void **val)
00160 {
00161     // Jose Garcia
00162     // The same comment justifying throwing an Error in val2buf applies here.
00163     if (!val)
00164         throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
00165 
00166     if (!*val)
00167         *val = new dods_float64;
00168 
00169     *(dods_float64 *)*val = _buf;
00170 
00171     return width();
00172 }
00173 
00179 dods_float64
00180 Float64::value() const
00181 {
00182     return _buf;
00183 }
00184 
00185 bool
00186 Float64::set_value(dods_float64 val)
00187 {
00188     _buf = val;
00189     set_read_p(true);
00190 
00191     return true;
00192 }
00193 //#if FILE_METHODS
00194 void
00195 Float64::print_val(FILE *out, string space, bool print_decl_p)
00196 {
00197     // FIX: need to set precision in the printing somehow.
00198     // os.precision(DODS_DBL_DIG);
00199 
00200     if (print_decl_p) {
00201         print_decl(out, space, false);
00202         fprintf(out, " = %.15g;\n", _buf) ;
00203     }
00204     else
00205         fprintf(out, "%.15g", _buf) ;
00206 }
00207 //#endif
00208 void
00209 Float64::print_val(ostream &out, string space, bool print_decl_p)
00210 {
00211     // FIX: need to set precision in the printing somehow.
00212     // os.precision(DODS_DBL_DIG);
00213 
00214     if (print_decl_p) {
00215         print_decl(out, space, false);
00216         out << " = " << std::setprecision( 15 ) << _buf << ";\n" ;
00217     }
00218     else
00219         out << std::setprecision( 15 ) << _buf ;
00220 }
00221 
00222 bool
00223 Float64::ops(BaseType *b, int op)
00224 {
00225     // Extract the Byte arg's value.
00226     if (!read_p() && !read()) {
00227         // Jose Garcia
00228         // Since the read method is virtual and implemented outside
00229         // libdap++ if we cannot read the data that is the problem
00230         // of the user or of whoever wrote the surrogate library
00231         // implemeting read therefore it is an internal error.
00232         throw InternalErr(__FILE__, __LINE__, "This value not read!");
00233     }
00234 
00235     // Extract the second arg's value.
00236     if (!b->read_p() && !b->read()) {
00237         // Jose Garcia
00238         // Since the read method is virtual and implemented outside
00239         // libdap++ if we cannot read the data that is the problem
00240         // of the user or of whoever wrote the surrogate library
00241         // implemeting read therefore it is an internal error.
00242         throw InternalErr(__FILE__, __LINE__, "This value not read!");
00243     }
00244 
00245     switch (b->type()) {
00246     case dods_byte_c:
00247         return rops<dods_float64, dods_byte, Cmp<dods_float64, dods_byte> >
00248                (_buf, dynamic_cast<Byte *>(b)->_buf, op);
00249     case dods_int16_c:
00250         return rops<dods_float64, dods_int16, Cmp<dods_float64, dods_int16> >
00251                (_buf, dynamic_cast<Int16 *>(b)->_buf, op);
00252     case dods_uint16_c:
00253         return rops<dods_float64, dods_uint16, Cmp<dods_float64, dods_uint16> >
00254                (_buf, dynamic_cast<UInt16 *>(b)->_buf, op);
00255     case dods_int32_c:
00256         return rops<dods_float64, dods_int32, Cmp<dods_float64, dods_int32> >
00257                (_buf, dynamic_cast<Int32 *>(b)->_buf, op);
00258     case dods_uint32_c:
00259         return rops<dods_float64, dods_uint32, Cmp<dods_float64, dods_uint32> >
00260                (_buf, dynamic_cast<UInt32 *>(b)->_buf, op);
00261     case dods_float32_c:
00262         return rops<dods_float64, dods_float32, Cmp<dods_float64, dods_float32> >
00263                (_buf, dynamic_cast<Float32 *>(b)->_buf, op);
00264     case dods_float64_c:
00265         return rops<dods_float64, dods_float64, Cmp<dods_float64, dods_float64> >
00266                (_buf, dynamic_cast<Float64 *>(b)->_buf, op);
00267     default:
00268         return false;
00269     }
00270 }
00271 
00280 void
00281 Float64::dump(ostream &strm) const
00282 {
00283     strm << DapIndent::LMarg << "Float64::dump - ("
00284     << (void *)this << ")" << endl ;
00285     DapIndent::Indent() ;
00286     BaseType::dump(strm) ;
00287     strm << DapIndent::LMarg << "value: " << _buf << endl ;
00288     DapIndent::UnIndent() ;
00289 }
00290 
00291 } // namespace libdap
00292 

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