Re: Missing math functions
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- Subject: Re: Missing math functions
- From: Dirk Laurie <dirk.laurie@...>
- Date: 2013年1月19日 09:52:34 +0200
2013年1月18日 Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br>:
>> There's no math.asinh, math.acosh, math.atanh.
>>
>> The reason presumably being that ANSI C does not provide them.
>
> C99 does. See http://www.tecgraf.puc-rio.br/~lhf/ftp/lua/#lmathx
>
Sorry, I should have checked there first.
But it's not only C99 that has the inverse hyperbolics.
~~~
asinh():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 ||
_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or cc -std=c99
~~~
What percentage of Lua installations nowadays are compiled with
a compiler that does not conform to any of those?