Author skrah
Recipients davin, mark.dickinson, rhettinger, serhiy.storchaka, skrah, tim.peters
Date 2017-10-01.19:17:30
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OpenBSD reduces to the range [-pi/4,pi/4]:

According to the man page on i386:

"Argument reduction is not performed accurately for huge arguments, resulting in large errors for such arguments to cos(), sin(), and tan()."

pi/2 is not exactly "huge", but it would be interesting if this
occurred on i386.
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