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/freebsd/lib/msun/src/
H A De_lgamma_r.cdiff 795b92049d7cdf9e5c93e3bf550ba43c4f42e72e Sun Aug 31 23:38:03 CEST 2014 Steve Kargl <kargl@FreeBSD.org> Compute sin(pi*x) without actually doing the pi*x multiplication.
sin_pi(x) is only called for x < 0 and |x| < 2**(p-1) where p is
the precision of x. The new argument reduction is an optimization
compared to the old code, and it removes a chunk of dead code.
Accuracy tests in the intervals (-21,-20), (-20,-19), ... (-1,0)
show no differences between the old and new code.

Obtained from: bde
H A De_lgammaf_r.cdiff 795b92049d7cdf9e5c93e3bf550ba43c4f42e72e Sun Aug 31 23:38:03 CEST 2014 Steve Kargl <kargl@FreeBSD.org> Compute sin(pi*x) without actually doing the pi*x multiplication.
sin_pi(x) is only called for x < 0 and |x| < 2**(p-1) where p is
the precision of x. The new argument reduction is an optimization
compared to the old code, and it removes a chunk of dead code.
Accuracy tests in the intervals (-21,-20), (-20,-19), ... (-1,0)
show no differences between the old and new code.

Obtained from: bde