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authorbde <bde@FreeBSD.org>2005-11-02 06:45:21 +0000
committerbde <bde@FreeBSD.org>2005-11-02 06:45:21 +0000
commit481c63491ce1b6f2a5252e58abf8b9db6264b607 (patch)
tree4fe60fd4ecbfa94df57c56fd406e58c8d8856aa2 /sys/alpha
parent5a81eebcee6e102fd8df655042b5b6d383bddc1c (diff)
downloadFreeBSD-src-481c63491ce1b6f2a5252e58abf8b9db6264b607.zip
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Removed dead code for handling tan[f]() on odd multiples of pi/2. This
case never occurs since pi/2 is irrational so no multiple of it can be represented as a float and we have precise arg reduction so we never end up with a remainder of 0 in the "kernel" function unless the original arg is 0. If this case occurs, then we would now fall through to general code that returns +-Inf (depending on the sign of the reduced arg) instead of forcing +Inf. The correct handling would be to return NaN since we would have lost so much precision that the correct result can be anything _except_ +-Inf. Don't reindent the else clause left over from this, although it was already bogusly indented ("if (foo) return; else ..." just marches the indentation to the right), since it will be removed too. Index: k_tan.c =================================================================== RCS file: /home/ncvs/src/lib/msun/src/k_tan.c,v retrieving revision 1.10 diff -r1.10 k_tan.c 88,90c88 < if (((ix | low) | (iy + 1)) == 0) < return one / fabs(x); < else { --- > {
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