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f6b10ed8e9
On Skylake, it improves log2 bench performance by:
Before After Improvement
max 208.779 63.827 69%
min 9.977 6.55 34%
mean 10.366 6.8191 34%
4 lines
70 B
C
4 lines
70 B
C
#define __log2 __log2_fma
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#include <sysdeps/ieee754/dbl-64/e_log2.c>
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