diff options
Diffstat (limited to 'gl/m4/frexp.m4')
| -rw-r--r-- | gl/m4/frexp.m4 | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gl/m4/frexp.m4 b/gl/m4/frexp.m4 index 39097923e4..2eb98a1dcd 100644 --- a/gl/m4/frexp.m4 +++ b/gl/m4/frexp.m4 @@ -1,4 +1,4 @@ -# frexp.m4 serial 14 +# frexp.m4 serial 15 dnl Copyright (C) 2007-2013 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -93,7 +93,7 @@ AC_DEFUN([gl_FUNC_FREXP_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CHECK_FUNCS_ONCE([alarm]) + AC_CHECK_DECLS_ONCE([alarm]) AC_CACHE_CHECK([whether frexp works], [gl_cv_func_frexp_works], [ AC_RUN_IFELSE( @@ -101,7 +101,8 @@ AC_DEFUN([gl_FUNC_FREXP_WORKS], #include <float.h> #include <math.h> #include <string.h> -#if HAVE_ALARM +#if HAVE_DECL_ALARM +# include <signal.h> # include <unistd.h> #endif /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0. @@ -124,9 +125,10 @@ int main() int i; volatile double x; double zero = 0.0; -#if HAVE_ALARM +#if HAVE_DECL_ALARM /* NeXTstep 3.3 frexp() runs into an endless loop when called on an infinite number. Let the test fail in this case. */ + signal (SIGALRM, SIG_DFL); alarm (5); #endif /* Test on denormalized numbers. */ |