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Having lround() does not mean llround() is available. 

We need to check for both lround() and llround() for at
least Cygwin.
(cherry picked from commit a1e2bfc93c)
This commit is contained in:
Cary R 2009-12-21 16:31:12 -08:00 committed by Stephen Williams
parent f733030b41
commit 9cd7a22dbe
2 changed files with 10 additions and 6 deletions
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1
configure.in
View File

@ -174,6 +174,7 @@ AC_CHECK_FUNCS(fopen64)
# systems we may need to use the compiler in C99 mode to get a definition.
# We requested C99 mode earlier with AC_PROG_CC_C99.
AC_SEARCH_LIBS([lround], [m], [AC_DEFINE([HAVE_LROUND], [1])])
AC_SEARCH_LIBS([llround], [m], [AC_DEFINE([HAVE_LLROUND], [1])])
AC_SEARCH_LIBS([nan], [m], [AC_DEFINE([HAVE_NAN], [1])])
AC_SEARCH_LIBS([fmin], [m], [AC_DEFINE([HAVE_FMIN], [1])])
AC_SEARCH_LIBS([fmax], [m], [AC_DEFINE([HAVE_FMAX], [1])])

15
vvp/config.h.in
View File

@ -48,6 +48,7 @@
# undef HAVE_READLINE_HISTORY_H
# undef HAVE_INTTYPES_H
# undef HAVE_LROUND
# undef HAVE_LLROUND
# undef HAVE_NAN
# undef UINT64_T_AND_ULONG_SAME
@ -147,8 +148,13 @@ inline long int lround(double x)
else
return (long)ceil(x-0.5);
}
#endif /* HAVE_LROUND */
#if ((SIZEOF_UNSIGNED_LONG < 8) && (SIZEOF_UNSIGNED_LONG_LONG >= 8))
#if !defined(HAVE_LLROUND)
/*
* We also need an equivalent function with a 64-bit return value.
* We also need an equivalent function with a 64-bit return value if
* it is not available.
*/
inline int64_t i64round(double x)
{
@ -157,16 +163,13 @@ inline int64_t i64round(double x)
else
return (int64_t)ceil(x-0.5);
}
#else /* HAVE_LROUND */
#if ((SIZEOF_UNSIGNED_LONG < 8) && (SIZEOF_UNSIGNED_LONG_LONG >= 8))
#else /* HAVE_LLROUND */
# define i64round llround
#endif /* HAVE_LLROUND */
#else
# define i64round lround
#endif
#endif /* HAVE_LROUND */
#if !defined(HAVE_NAN)
# define nan(x) (NAN)
#endif