9 lines
151 B
C
9 lines
151 B
C
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#include <math.h>
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double
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log2 (double _x)
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{
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double retval;
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__asm__ ("fyl2x;" : "=t" (retval) : "0" (_x), "u" (1.0L) : "st(1)");
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return retval;
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}
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