- #include <cmath> 
- #include <cstdio> 
-   
- int main() 
- { 
-     int xm = 0x3f18492a; 
-     float x = *(float*)&xm; 
-     x = (sqrt(x) + 1) / 2.0f; 
-     printf("%f %x\n", x, *(int*)&x); 
- } 
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