diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 90 |
1 files changed, 89 insertions, 1 deletions
@@ -33808,7 +33808,7 @@ else unsigned long long l2 = (unsigned long long)d1; unsigned long long l3 = (unsigned long long)d2; unsigned long long l4; - unsigned long long l5 = 0x7fffffffffffffffLLU; + unsigned long long l5 = 0x7fffffffffffffffULL; int ret = 0; if(l1 <= l5 || l2 <= l5 || l3 <= l5) @@ -33883,6 +33883,94 @@ else echo "${ECHO_T}no" >&6 fi +echo "$as_me:$LINENO: checking if converting unsigned long long to long double with precision work" >&5 +echo $ECHO_N "checking if converting unsigned long long to long double with precision work... $ECHO_C" >&6 +if test "${hdf5_cv_ullong_to_ldouble_precision_works+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + if test "$cross_compiling" = yes; then + { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling" >&5 +echo "$as_me: error: cannot run test program while cross compiling" >&2;} + { (exit 1); exit 1; }; } +else + cat >conftest.$ac_ext <<_ACEOF +#line $LINENO "configure" +#include "confdefs.h" + + int main(void) + { + unsigned long long l = 0xa601e80bda85fcefULL; + long double ld; + unsigned char *c1, *c2; + int endian, size; + int tst_value = 1; + int i; + int ret = 0; + + /* Determine this system's endianess */ + c1 = (unsigned char*)calloc(1, sizeof(int)); + memcpy(c1, &tst_value, sizeof(int)); + if(c1[0]==1) + endian = 0; /* little endian */ + else + endian = 1; /* big endian */ + + memset(&ld, 0, 12); + ld = (long double)l; + + size = sizeof(long double); + c2 = (unsigned char*)malloc(size); + memcpy(c2, &ld, size); + + /* Test if the last 2 bytes of mantissa are lost. Mainly for FreeBSD on Intel + * architecture(sleipnir) where it happens. */ + if(endian==0 && c2[0]==0 && c2[1]==0) /*little endian*/ + ret = 1; + + free(c1); + free(c2); +done: + exit(ret); + } + +_ACEOF +rm -f conftest$ac_exeext +if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5 + (eval $ac_link) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { ac_try='./conftest$ac_exeext' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + hdf5_cv_ullong_to_ldouble_precision_works=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +cat conftest.$ac_ext >&5 +( exit $ac_status ) +hdf5_cv_ullong_to_ldouble_precision_works=no +fi +rm -f core core.* *.core conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi +fi + + +if test ${hdf5_cv_ullong_to_ldouble_precision_works} = "yes"; then + +cat >>confdefs.h <<\_ACEOF +#define ULLONG_TO_LDOUBLE_PRECISION_WORKS 1 +_ACEOF + + echo "$as_me:$LINENO: result: yes" >&5 +echo "${ECHO_T}yes" >&6 +else + echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6 +fi + H5_VERSION="`cut -d' ' -f3 $srcdir/README.txt | head -1`" |