diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 68 |
1 files changed, 68 insertions, 0 deletions
@@ -27058,6 +27058,74 @@ else $as_echo "no" >&6; } fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if accurately converting unsigned long to float values" >&5 +$as_echo_n "checking if accurately converting unsigned long to float values... " >&6; } + +if test "${hdf5_ulong_to_float_accurate+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + if test "$cross_compiling" = yes; then : + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error "cannot run test program while cross compiling +See \`config.log' for more details." "$LINENO" 5; } +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + 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); + } + +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + hdf5_ulong_to_float_accurate=yes +else + hdf5_ulong_to_float_accurate=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +fi + + +if test ${hdf5_ulong_to_float_accurate} = "yes"; then + +$as_echo "#define ULONG_TO_FLOAT_ACCURATE 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if accurately converting unsigned long long to floating-point values" >&5 $as_echo_n "checking if accurately converting unsigned long long to floating-point values... " >&6; } |