For anyone else confused by this, the control logic described in the comment happens in https://github.com/ifduyue/musl/blob/master/src/math/cos.c https://githu

For anyone else confused by this, the control logic described in the comment happens in https://github.com/ifduyue/musl/blob/master/src/math/cos.c https://github.com/ifduyue/musl/blob/master/src/math/cos.c