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| author | bde <bde@FreeBSD.org> | 2004-03-12 12:02:03 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 2004-03-12 12:02:03 +0000 |
| commit | 5c7ee701c799c89f8b41b2dadf02cf3d7b6e856a (patch) | |
| tree | 0e2790073ac0eb72fba247dfe0b4fb87b41ce09b | |
| parent | 08e8eb2b40c0e5b6b1d511c0a68bd174602757b5 (diff) | |
| download | FreeBSD-src-5c7ee701c799c89f8b41b2dadf02cf3d7b6e856a.zip FreeBSD-src-5c7ee701c799c89f8b41b2dadf02cf3d7b6e856a.tar.gz | |
Initial support for C99's (or is it POSIX.1-2001's?) MATH_ERRNO,
MATH_ERREXCEPTION and math_errhandling, so that C99 applications at
least have the possibility of determining that errno is not set for
math functions. Set math_errhandling to the non-standard-conforming
value of 0 for now to indicate that we don't support either method
of reporting errors. We intentionally don't support MATH_ERRNO
because errno is a mistake, and we are missing support for
MATH_ERREXCEPTION (<fenv.h>, compiler support for <fenv.h>, and
actually setting the exception flags correctly).
| -rw-r--r-- | lib/msun/src/math.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/msun/src/math.h b/lib/msun/src/math.h index 7e91916..842793b 100644 --- a/lib/msun/src/math.h +++ b/lib/msun/src/math.h @@ -40,6 +40,12 @@ extern const union __nan_un { #define INFINITY HUGE_VALF #define NAN (__nan.__uf) +#if __ISO_C_VISIBLE >= 1999 +#define MATH_ERRNO 1 +#define MATH_ERREXCEPT 2 +#define math_errhandling 0 +#endif + /* Symbolic constants to classify floating point numbers. */ #define FP_INFINITE 0x01 #define FP_NAN 0x02 |
