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{{Warning|This article is '''outdated'''. For current C++ code examples see the Octave Manual https://octave.org/doc/latest/Standalone-Programs.html.}} | |||
The code below shows an example of how to load a matrix from a file in Octave's binary file format. | The code below shows an example of how to load a matrix from a file in Octave's binary file format. | ||
An example of how to load data from a file in Octave's ascii format can be found in this | An example of how to load data from a file in Octave's ascii format can be found in this [[fortran|page]]. | ||
{{Code| | {{Code|octave_binary_io_example.cc: C++ function to load a matrix from a BINARY file in Octave native format|<syntaxhighlight lang="C" style="font-size:13px"> | ||
#include <fstream> | #include <fstream> | ||
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std::fstream file; | std::fstream file; | ||
std::ios::openmode m = std::ios::in; | std::ios::openmode m = std::ios::in; | ||
load_save_format format = LS_BINARY; | load_save_format format = LS_BINARY; | ||
oct_mach_info::float_format flt_fmt = oct_mach_info::flt_fmt_unknown; | oct_mach_info::float_format flt_fmt = oct_mach_info::flt_fmt_unknown; | ||
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int main (void) | int main (void) | ||
{ | { | ||
string_vector argv (1); | string_vector argv (1); | ||
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</syntaxhighlight>}} | </syntaxhighlight>}} | ||
To test, type the following in Octave: | |||
{{Code||<syntaxhighlight lang="Octave" style="font-size:13px"> | |||
>> test_var = randn(5); | |||
>> save -binary test.bin test_var | |||
</syntaxhighlight>}} | |||
Compile and run the example with the following commads | |||
{{Code||<syntaxhighlight lang="bash" style="font-size:13px"> | |||
$ mkoctfile --link-stand-alone octave_binary_io_example.cc | |||
$ ./a.out | |||
</syntaxhighlight>}} | |||
[[Category:Outdated pages]] | |||