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#include <assert.h>
#include <emscripten/em_asm.h>
#include <stdio.h>
#include <thread>
#include <math.h>
std::atomic<int> ret;
void foo() {
int len = MAIN_THREAD_EM_ASM_INT({
var elem = document.getElementById('elem');
window.almost_PI = 3.14159;
return elem.innerText.length;
});
double almost_PI = MAIN_THREAD_EM_ASM_DOUBLE({
// read a double from the main thread
return window.almost_PI;
});
printf("almost PI: %f\n", almost_PI);
assert(fabs(almost_PI - 3.14159) < 0.001);
ret = len;
}
int main() {
std::thread t(foo);
t.join();
printf("ret: %d\n", ret.load());
return ret.load();
}
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