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#include <stdio.h>
#include <stdlib.h>
#include "fac.h"
int main(int argc, char** argv) {
/* Make sure there is at least one command-line argument. */
if (argc < 2) {
printf("Invalid argument. Expected '%s NUMBER'\n", argv[0]);
return 1;
}
/* Convert the argument from a string to an int. We'll implicitly cast the int
to a `u32`, which is what `fac` expects. */
u32 x = atoi(argv[1]);
/* Initialize the Wasm runtime. */
wasm_rt_init();
/* Initialize the `fac` module (this registers the module's function types in
* a global data structure) */
Z_fac_init_module();
/* Declare an instance of the `fac` module. */
Z_fac_instance_t instance;
/* Construct the module instance. */
Z_fac_instantiate(&instance);
/* Call `fac`, using the mangled name. */
u32 result = Z_facZ_fac(&instance, x);
/* Print the result. */
printf("fac(%u) -> %u\n", x, result);
/* Free the fac module. */
Z_fac_free(&instance);
/* Free the Wasm runtime state. */
wasm_rt_free();
return 0;
}
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