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44 lines
764 B
C
44 lines
764 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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typedef unsigned long long UINT64;
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int GetHumanReadableGBSize(UINT64 SizeBytes)
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{
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int i;
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int Pow2 = 1;
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double Delta;
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double GB = SizeBytes * 1.0 / 1000 / 1000 / 1000;
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for (i = 0; i < 12; i++)
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{
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if (Pow2 > GB)
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{
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Delta = (Pow2 - GB) / Pow2;
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}
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else
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{
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Delta = (GB - Pow2) / Pow2;
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}
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if (Delta < 0.05)
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{
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return Pow2;
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}
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Pow2 <<= 1;
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}
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return (int)GB;
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}
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int main(int argc, char **argv)
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{
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UINT64 value = strtoul(argv[1], NULL, 10);
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printf("%d", GetHumanReadableGBSize(value * 512));
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return 0;
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}
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