I took the liberty of already adding the API to compose Yacas
expression trees,
executing them, and pulling them apart. This is just a preliminary
stab at it, we
can change it of course (removing void* for something else say). It
was relatively
little work.
You can get it from our cvs tree at sourceforge. libcyacas.a is the
library, src/cyacas.h
defines the interface. I rolled a little example embed/example4.c. If
you run it you see
the spectacular calculation "1+1" being performed :-)
Input> (+ 1 1 )
Output> 2
The source code for this can be found below, to give you an
indication of how this
API would work.
What do you think? Would that work for you?
Ayal
#include <stdio.h>
#include "cyacas.h"
int verbose_debug = 0; // avoid linkage error
void print_expr(void* object)
{
if (object == NULL)
return;
if (yacas_object_is_sublist(object))
{
printf("(");
print_expr(yacas_get_sublist(object));
printf(")");
}
else
{
printf("%s ",yacas_get_atom(object));
print_expr(yacas_get_next(object));
}
}
void runexpr(void* object)
{
printf("Input> ");
print_expr(object);
printf("\n");
void* result = yacas_execute(object);
printf("Output> ");
print_expr(result);
printf("\n");
yacas_delete_object(result);
}
int main(int argc, char** argv)
{
int i;
yacas_init();
void *input =
yacas_create_sublist(
yacas_link_objects(
yacas_create_atom("+"),
yacas_link_objects(
yacas_create_atom("1"),
yacas_create_atom("1")
)
)
);
runexpr(input);
yacas_delete_object(input);
yacas_exit();
return 0;
}
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