Add cmath support to decimal128_fast

[mborland]

Closes: #637

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 94.28571% with 4 lines in your changes missing coverage. Please review.

Project coverage is 98.7%. Comparing base (fc1f412) to head (7172da4).

Additional details and impacted files

[](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) ```diff @@ Coverage Diff @@ ## develop #638 +/- ## ========================================= - Coverage 98.8% 98.7% -0.1% ========================================= Files 219 219 Lines 15657 15717 +60 Branches 1718 1720 +2 ========================================= + Hits 15459 15497 +38 - Misses 198 220 +22 ``` | [Files](https://app.codecov.io/gh/cppalliance/decimal/pull/638?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) | Coverage Δ | | |---|---|---| | [include/boost/decimal/decimal128\_fast.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdecimal128_fast.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RlY2ltYWwxMjhfZmFzdC5ocHA=) | `97.7% <100.0%> (+0.1%)` | :arrow_up: | | [include/boost/decimal/detail/cmath/fma.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Ffma.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9mbWEuaHBw) | `100.0% <100.0%> (ø)` | | | [...lude/boost/decimal/detail/cmath/impl/asin\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Fasin_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2FzaW5faW1wbC5ocHA=) | `100.0% <ø> (ø)` | | | [...ecimal/detail/cmath/impl/assoc\_legendre\_lookup.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Fassoc_legendre_lookup.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2Fzc29jX2xlZ2VuZHJlX2xvb2t1cC5ocHA=) | `75.0% <ø> (ø)` | | | [...lude/boost/decimal/detail/cmath/impl/atan\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Fatan_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2F0YW5faW1wbC5ocHA=) | `100.0% <ø> (ø)` | | | [...clude/boost/decimal/detail/cmath/impl/cos\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Fcos_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2Nvc19pbXBsLmhwcA==) | `100.0% <100.0%> (ø)` | | | [...lude/boost/decimal/detail/cmath/impl/cosh\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Fcosh_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2Nvc2hfaW1wbC5ocHA=) | `100.0% <ø> (ø)` | | | [...ude/boost/decimal/detail/cmath/impl/expm1\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Fexpm1_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2V4cG0xX2ltcGwuaHBw) | `100.0% <ø> (ø)` | | | [...de/boost/decimal/detail/cmath/impl/lgamma\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Flgamma_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2xnYW1tYV9pbXBsLmhwcA==) | `100.0% <ø> (ø)` | | | [...ude/boost/decimal/detail/cmath/impl/log1p\_impl.hpp](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree&filepath=include%2Fboost%2Fdecimal%2Fdetail%2Fcmath%2Fimpl%2Flog1p_impl.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance#diff-aW5jbHVkZS9ib29zdC9kZWNpbWFsL2RldGFpbC9jbWF0aC9pbXBsL2xvZzFwX2ltcGwuaHBw) | `100.0% <ø> (ø)` | | | ... and [14 more](https://app.codecov.io/gh/cppalliance/decimal/pull/638?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) | | ... and [3 files with indirect coverage changes](https://app.codecov.io/gh/cppalliance/decimal/pull/638/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/cppalliance/decimal/pull/638?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by 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Last update [fc1f412...7172da4](https://app.codecov.io/gh/cppalliance/decimal/pull/638?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cppalliance).