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| author | Erik Schnetter <schnetter@gmail.com> | 2013-07-02 22:35:41 -0400 |
|---|---|---|
| committer | Erik Schnetter <schnetter@gmail.com> | 2013-07-02 22:35:41 -0400 |
| commit | 2cfd4347353565804661483d66a60394af7c40f7 (patch) | |
| tree | 20aa19d2541a52160919bfb1dc2b0336f3b8c57f /vec_pseudo.h | |
| parent | e4fbcb8815d919662b9c100e7e2aed1ab5599add (diff) | |
| download | vecmathlib-2cfd4347353565804661483d66a60394af7c40f7.zip vecmathlib-2cfd4347353565804661483d66a60394af7c40f7.tar.gz | |
Improve performance of ilogb and frexp
Diffstat (limited to 'vec_pseudo.h')
| -rw-r--r-- | vec_pseudo.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/vec_pseudo.h b/vec_pseudo.h index c3658c0..29f2ed0 100644 --- a/vec_pseudo.h +++ b/vec_pseudo.h @@ -752,8 +752,9 @@ namespace vecmathlib { for (int d=0; d<size; ++d) { int ir; real_t r = std::frexp(v[d], &ir); - if (ir == FP_ILOGB0) ir = std::numeric_limits<int_t>::min(); - else if (ir == FP_ILOGBNAN) ir = std::numeric_limits<int_t>::max(); + typedef std::numeric_limits<int_t> NL; + if (FP_ILOGB0 != NL::min() and ir == FP_ILOGB0) ir = NL::min(); + else if (FP_ILOGBNAN != NL::max() and ir == FP_ILOGBNAN) ir = NL::max(); res.v[d] = r; ires.v[d] = ir; } @@ -765,8 +766,9 @@ namespace vecmathlib { intvec_t res; for (int d=0; d<size; ++d) { int_t r = std::ilogb(v[d]); - if (r == FP_ILOGB0) r = std::numeric_limits<int_t>::min(); - else if (r == FP_ILOGBNAN) r = std::numeric_limits<int_t>::max(); + typedef std::numeric_limits<int_t> NL; + if (FP_ILOGB0 != NL::min() and r == FP_ILOGB0) r = NL::min(); + else if (FP_ILOGBNAN != NL::max() and r == FP_ILOGBNAN) r = NL::max(); res.v[d] = r; } return res; |
