diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 104 |
1 files changed, 104 insertions, 0 deletions
@@ -51783,6 +51783,110 @@ else echo "${ECHO_T}no" >&6 fi +echo "$as_me:$LINENO: checking if correctly converting (unsigned) long long to long double values" >&5 +echo $ECHO_N "checking if correctly converting (unsigned) long long to long double values... $ECHO_C" >&6 + +if test ${ac_cv_sizeof_long_double} = 0; then + hdf5_llong_to_ldouble_correct=${hdf5_llong_to_ldouble_correct=no} +else + if test "${hdf5_llong_to_ldouble_correct+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 +See \`config.log' for more details." >&5 +echo "$as_me: error: cannot run test program while cross compiling +See \`config.log' for more details." >&2;} + { (exit 1); exit 1; }; } +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + + int main(void) + { + long double ld; + long long ll; + unsigned long long ull; + unsigned char s[16]; + int flag=0, ret=0; + + /*Determine if long double has 16 byte in size, 11 bit exponent, and + *the bias is 0x3ff */ + if(sizeof(long double) == 16) { + ld = 1.0L; + memcpy(s, &ld, 16); + if(s[0]==0x3f && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 && + s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00) + flag = 1; + } + + if(flag==1 && sizeof(long long)==8) { + ll = 0x01ffffffffffffffLL; + ld = (long double)ll; + memcpy(s, &ld, 16); + /*Check if the bit sequence is as supposed to be*/ + if(s[0]!=0x43 || s[1]!=0x7f || s[2]!=0xff || s[3]!=0xff || + s[4]!=0xff || s[5]!=0xff || s[6]!=0xff || s[7]!=0xff || + s[8]!=0xf0 || s[9]!=0x00 || s[10]!=0x00 || s[11]!=0x00) + ret = 1; + } + if(flag==1 && sizeof(unsigned long long)==8) { + ull = 0x01ffffffffffffffULL; + ld = (long double)ull; + memcpy(s, &ld, 16); + if(s[0]!=0x43 || s[1]!=0x7f || s[2]!=0xff || s[3]!=0xff || + s[4]!=0xff || s[5]!=0xff || s[6]!=0xff || s[7]!=0xff || + s[8]!=0xf0 || s[9]!=0x00 || s[10]!=0x00 || s[11]!=0x00) + ret = 1; + } + 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 $ac_status); }; }; then + hdf5_llong_to_ldouble_correct=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +( exit $ac_status ) +hdf5_llong_to_ldouble_correct=no +fi +rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi +fi + +fi + +if test ${hdf5_llong_to_ldouble_correct} = "yes"; then + +cat >>confdefs.h <<\_ACEOF +#define LLONG_TO_LDOUBLE_CORRECT 1 +_ACEOF + + echo "$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`" |