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Bug 676087-configure.ac: isnan() and isinf() are macros, not functions

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The isnan() and isinf() are C99 macros not functions so use
AC_CHECK_DECL instead of AC_CHECK_FUNCS for those.
This commit is contained in:
Natanael Copa
2012-05-15 13:09:24 +02:00
committed by Matthias Clasen
parent 276dae8ae6
commit d6aee922bb
2 changed files with 4 additions and 3 deletions
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3
configure.ac
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@ -751,7 +751,8 @@ AC_TYPE_UID_T
# Check for round(), rint(), isnan(), isinf() and nearbyint() # Check for round(), rint(), isnan(), isinf() and nearbyint()
AC_CHECK_LIB(m,round,,) AC_CHECK_LIB(m,round,,)
AC_CHECK_FUNCS(round rint isnan isinf nearbyint) AC_CHECK_FUNCS(round rint nearbyint)
AC_CHECK_DECLS([isnan, isinf], [], [], [[#include <math.h>]])
# Checks for gdkspawn # Checks for gdkspawn
AC_CHECK_HEADERS(crt_externs.h) AC_CHECK_HEADERS(crt_externs.h)

4
gdk/fallback-c89.c
View File

@ -19,7 +19,7 @@
#include <float.h> #include <float.h>
#ifndef HAVE_ISNAN #ifndef HAVE_DECL_ISNAN
/* it seems of the supported compilers only /* it seems of the supported compilers only
* MSVC does not have isnan(), but it does * MSVC does not have isnan(), but it does
* have _isnan() which does the same as isnan() * have _isnan() which does the same as isnan()
@ -31,7 +31,7 @@ isnan (double x)
} }
#endif #endif
#ifndef HAVE_ISINF #ifndef HAVE_DECL_ISINF
/* Unfortunately MSVC does not have finite() /* Unfortunately MSVC does not have finite()
* but it does have _finite() which is the same * but it does have _finite() which is the same
* as finite() except when x is a NaN * as finite() except when x is a NaN