From: ville.mattila@...
Date: 2006-02-02T00:44:50+09:00
Subject: Re: [PATCH]  solaris 10  isinf and ruby_setenv fixes



>From: H.Yamamoto <ocean@m2.ccsnet.ne.jp>
>Date: 01.02.2006 16:07:15
>Subject: Re: [PATCH]  solaris 10  isinf and ruby_setenv fixes
>
>Hello.
>
>>This patch works correctly for me. However there is still the isinf
trouble
>>(e.g. configure cannot find isinf on solaris 10)
>
>Well, should I commit your patch [ruby-core:7273],
>or define isinf/isnan in [ruby-core:7151] somewhere?

      The below thing seems to be bit kludge to me. I can test it if
      you can send me a patch that has it put somewhere.

>
>| #include <math.h>
>|
>| # define isnan(x) \
>|     (sizeof (x) == sizeof (long double) ? isnan_ld (x) \
>|      : sizeof (x) == sizeof (double) ? isnan_d (x) \
>|      : isnan_f (x))
>| static inline int isnan_f  (float       x) @{ return x != x; @}
>| static inline int isnan_d  (double      x) @{ return x != x; @}
>| static inline int isnan_ld (long double x) @{ return x != x; @}
>| #endif
>|
>| # define isinf(x) \
>|     (sizeof (x) == sizeof (long double) ? isinf_ld (x) \
>|      : sizeof (x) == sizeof (double) ? isinf_d (x) \
>|      : isinf_f (x))
>| static inline int isinf_f  (float       x) @{ return isnan (x - x); @}
>| static inline int isinf_d  (double      x) @{ return isnan (x - x); @}
>| static inline int isinf_ld (long double x) @{ return isnan (x - x); @}
>| #endif
>
>