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For k1 in 1 and 3, n can only have values of 0 and 2, so checking k1 & 2 is equivalent to checking n & 2. We prefer the latter so that we don't use k1 for anything other than selecting the quadrant in do_sincos_1, thus dropping it completely. The previous logic was: "Compute sine for the value and based on the new rotated quadrant (k1) negate the value if we're in the fourth quadrant." With this change, the logic now is: "Compute sine for the value and negate it if we were either (1) in the fourth quadrant or (2) we actually wanted the cosine and were in the third quadrant." * sysdeps/ieee754/dbl-64/s_sin.c (do_sincos_1): Check N instead of K1. |
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bits | ||
dbl-64 | ||
flt-32 | ||
ldbl-64-128 | ||
ldbl-96 | ||
ldbl-128 | ||
ldbl-128ibm | ||
ldbl-opt | ||
ieee754.h | ||
k_standard.c | ||
k_standardf.c | ||
k_standardl.c | ||
Makefile | ||
s_lib_version.c | ||
s_matherr.c | ||
s_signgam.c |