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| author | Ludovic Courtès <ludo@gnu.org> | 2011-07-01 22:34:29 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2011-07-01 22:34:29 +0200 |
| commit | 231c0e0e61fc4bdd69398e89084b7819f0420710 (patch) | |
| tree | 097398cd884074bd1d62dfa592fbdd8eda0d9796 /m4/ceil.m4 | |
| parent | 97ec95b72873428f215a8a9892487c3a8435a754 (diff) | |
| download | guile-231c0e0e61fc4bdd69398e89084b7819f0420710.tar.gz | |
Update Gnulib to v0.0-5874-g7170ee0.
Diffstat (limited to 'm4/ceil.m4')
| -rw-r--r-- | m4/ceil.m4 | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/m4/ceil.m4 b/m4/ceil.m4 index 157407745..b9052976f 100644 --- a/m4/ceil.m4 +++ b/m4/ceil.m4 @@ -1,4 +1,4 @@ -# ceil.m4 serial 6 +# ceil.m4 serial 8 dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -28,12 +28,18 @@ AC_DEFUN([gl_FUNC_CEIL], #include <math.h> ]gl_DOUBLE_MINUS_ZERO_CODE[ ]gl_DOUBLE_SIGNBIT_CODE[ -int main() +static double dummy (double f) { return 0; } +int main (int argc, char *argv[]) { + double (*my_ceil) (double) = argc ? ceil : dummy; + int result = 0; /* Test whether ceil (-0.0) is -0.0. */ - if (signbitd (minus_zerod) && !signbitd (ceil (minus_zerod))) - return 1; - return 0; + if (signbitd (minus_zerod) && !signbitd (my_ceil (minus_zerod))) + result |= 1; + /* Test whether ceil (-0.3) is -0.0. */ + if (signbitd (-0.3) && !signbitd (my_ceil (-0.3))) + result |= 2; + return result; } ]])], [gl_cv_func_ceil_ieee=yes], |