diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/configure.ac b/configure.ac index 04122e8..76bfc95 100644 --- a/configure.ac +++ b/configure.ac @@ -2574,55 +2574,6 @@ case "`uname`" in ;; esac -## ---------------------------------------------------------------------- -## Set the flag to indicate that the machine can accurately convert -## 'unsigned long' to 'float' values. -## (This flag should be set for all machines, except for Pathscale compiler -## on Sandia's Linux machine where the compiler interprets 'unsigned long' -## values as negative when the first bit of 'unsigned long' is on during -## the conversion to float.) -## -AC_MSG_CHECKING([if accurately converting unsigned long to float values]) - -AC_CACHE_VAL([hdf5_cv_ulong_to_float_accurate], - [AC_TRY_RUN([ - int main(void) - { - int ret = 0; - unsigned long l1; - unsigned long l2; - unsigned long l3; - float f1; - float f2; - float f3; - - - if(sizeof(unsigned long)==8) { - l1 = 0xffffffffffffffffUL; - l2 = 0xffffffffffff0000UL; - l3 = 0xf000000000000000UL; - - f1 = (float)l1; - f2 = (float)l2; - f3 = (float)l3; - - if((f1 < 0) || (f2 < 0) || (f3 < 0)) - ret = 1; - } - -done: - exit(ret); - } - ], [hdf5_cv_ulong_to_float_accurate=yes], [hdf5_cv_ulong_to_float_accurate=no],)]) - -if test ${hdf5_cv_ulong_to_float_accurate} = "yes"; then - AC_DEFINE([ULONG_TO_FLOAT_ACCURATE], [1], - [Define if your system accurately converting unsigned long to float values.]) - AC_MSG_RESULT([yes]) -else - AC_MSG_RESULT([no]) -fi - ## ---------------------------------------------------------------------- ## Set the flag to indicate that the machine can accurately convert |