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 basic_vars

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test_emscripten_api.cpp

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#include <stdio.h>

#include "emscripten.h"

#include "assert.h"

extern "C" {

void save_me_aimee() { printf("mann\n"); }

}

int main() {

// EMSCRIPTEN_COMMENT("hello from the source");

emscripten_run_script("Module.print('hello world' + '!')");

printf("*%d*\n", emscripten_run_script_int("5*20"));

printf("*%s*\n", emscripten_run_script_string("'five'+'six'"));

emscripten_run_script("Module['_save_me_aimee']()");

//

double d = 0.1234567891231219886553;

int len = emscripten_print_double(d, NULL, -1);

char buffer[len+1];

buffer[len] = 255;

emscripten_print_double(d, buffer, len+1);

assert(buffer[len] == 0); // null terminated

double e;

sscanf(buffer, "%lf", &e);

printf("%.30lf : %s : %.30lf (%d)\n", d, buffer, e, len);

buffer[0] = 1;

buffer[1] = 2;

buffer[2] = 3;

int n = emscripten_print_double(d, buffer, 2);

assert(n == 1);

assert(buffer[0] == '0'); // touched

assert(buffer[1] == 0); // touched

assert(buffer[2] == 3); // untouched

puts("success\n");

return 0;

}