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/* rcp-sqrt magic value: 0x5F3759DF */ #include <stdio.h> void DispIntFloat(unsigned int i) { printf("0x%.8X = %f\n", i, *(float *)&i); } void DispFloatInt(float f) { printf("%f = 0x%.8X\n", f, *(unsigned int *)&f); } int main() { DispIntFloat(0x5F3759DF); DispFloatInt(13211836172961054720.000000f); return 0; }
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