diff options
| -rwxr-xr-x | configure | 101 | ||||
| -rw-r--r-- | configure.in | 73 |
2 files changed, 170 insertions, 4 deletions
@@ -33265,12 +33265,111 @@ fi echo "$as_me:$LINENO: checking if accurately converting unsigned long long to floating-point values works" >&5 echo $ECHO_N "checking if accurately converting unsigned long long to floating-point values works... $ECHO_C" >&6 -if test "${hdf5_cv_sw_ulong_to_fp_bottom_bit_works+set}" = set; then + +if test ${host_os_novers} = "solaris2.x"; then + if test "${hdf5_cv_sw_ulong_to_fp_bottom_bit_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 $LINENO "configure" +#include "confdefs.h" + + int main(void) + { + unsigned long l1; + unsigned long l2; + unsigned long l3; + unsigned long l4; + unsigned long long ld1; + unsigned long long ld2; + unsigned long long ld3; + unsigned long long ld4; + double d1, d2, d3, d4; + unsigned char s[8]; + int ret = 0; + + if(sizeof(unsigned long)==8) { + l1 = 0xf000000000000b00; /*Round-down case*/ + l2 = 0xf000000000000401; /*Round-up case*/ + l3 = 0xf000000000000400; /*Round-down case*/ + l4 = 0xf000000000000c00; /*Round-up case*/ + + d1 = (double)l1; + d2 = (double)l2; + d3 = (double)l3; + d4 = (double)l4; + } else if(sizeof(unsigned long long)==8) { + ld1 = 0xf000000000000b00; /*Round-down case*/ + ld2 = 0xf000000000000401; /*Round-up case*/ + ld3 = 0xf000000000000400; /*Round-down case*/ + ld4 = 0xf000000000000c00; /*Round-up case*/ + + d1 = (double)ld1; + d2 = (double)ld2; + d3 = (double)ld3; + d4 = (double)ld4; + } else { + ret = 1; + goto done; + } + + memcpy(s, &d1, 8); + if(s[7]!=1) + ret = 1; + + memcpy(s, &d2, 8); + if(s[7]!=1) + ret = 1; + + memcpy(s, &d3, 8); + if(s[7]!=0) + ret = 1; + + memcpy(s, &d4, 8); + if(s[7]!=2) + ret = 1; + +done: + exit(ret); + } + +_ACEOF +rm -f conftest$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 $ac_status); }; }; then + hdf5_cv_sw_ulong_to_fp_bottom_bit_works=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +cat conftest.$ac_ext >&5 +( exit $ac_status ) +hdf5_cv_sw_ulong_to_fp_bottom_bit_works=no +fi +rm -f core core.* *.core conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi +fi + +else + if test "${hdf5_cv_sw_ulong_to_fp_bottom_bit_works+set}" = set; then echo $ECHO_N "(cached) $ECHO_C" >&6 else hdf5_cv_sw_ulong_to_fp_bottom_bit_works=yes fi +fi if test ${hdf5_cv_sw_ulong_to_fp_bottom_bit_works} = "yes"; then diff --git a/configure.in b/configure.in index 61bf9d7..7f5e995 100644 --- a/configure.in +++ b/configure.in @@ -2382,12 +2382,79 @@ fi dnl ---------------------------------------------------------------------- dnl Set the flag to indicate that the machine can accurately convert -dnl 'unsigned long long' values to 'float' and 'double' values. +dnl 'unsigned (long) long' values to 'float' and 'double' values. dnl (This flag should be set for all machines, except for the SGIs, where -dnl the cache value is set in the config/irix6.x config file) +dnl the cache value is set in the config/irix6.x config file) and Solaris +dnl 64-bit machines, where the short program below tests if round-up is +dnl correctly handled. dnl AC_MSG_CHECKING([if accurately converting unsigned long long to floating-point values works]) -AC_CACHE_VAL([hdf5_cv_sw_ulong_to_fp_bottom_bit_works], [hdf5_cv_sw_ulong_to_fp_bottom_bit_works=yes]) + +if test ${host_os_novers} = "solaris2.x"; then + AC_CACHE_VAL([hdf5_cv_sw_ulong_to_fp_bottom_bit_works], + [AC_TRY_RUN([ + int main(void) + { + unsigned long l1; + unsigned long l2; + unsigned long l3; + unsigned long l4; + unsigned long long ld1; + unsigned long long ld2; + unsigned long long ld3; + unsigned long long ld4; + double d1, d2, d3, d4; + unsigned char s[8]; + int ret = 0; + + if(sizeof(unsigned long)==8) { + l1 = 0xf000000000000b00; /*Round-down case*/ + l2 = 0xf000000000000401; /*Round-up case*/ + l3 = 0xf000000000000400; /*Round-down case*/ + l4 = 0xf000000000000c00; /*Round-up case*/ + + d1 = (double)l1; + d2 = (double)l2; + d3 = (double)l3; + d4 = (double)l4; + } else if(sizeof(unsigned long long)==8) { + ld1 = 0xf000000000000b00; /*Round-down case*/ + ld2 = 0xf000000000000401; /*Round-up case*/ + ld3 = 0xf000000000000400; /*Round-down case*/ + ld4 = 0xf000000000000c00; /*Round-up case*/ + + d1 = (double)ld1; + d2 = (double)ld2; + d3 = (double)ld3; + d4 = (double)ld4; + } else { + ret = 1; + goto done; + } + + memcpy(s, &d1, 8); + if(s[7]!=1) + ret = 1; + + memcpy(s, &d2, 8); + if(s[7]!=1) + ret = 1; + + memcpy(s, &d3, 8); + if(s[7]!=0) + ret = 1; + + memcpy(s, &d4, 8); + if(s[7]!=2) + ret = 1; + +done: + exit(ret); + } + ], [hdf5_cv_sw_ulong_to_fp_bottom_bit_works=yes], [hdf5_cv_sw_ulong_to_fp_bottom_bit_works=no],)]) +else + AC_CACHE_VAL([hdf5_cv_sw_ulong_to_fp_bottom_bit_works], [hdf5_cv_sw_ulong_to_fp_bottom_bit_works=yes]) +fi if test ${hdf5_cv_sw_ulong_to_fp_bottom_bit_works} = "yes"; then AC_DEFINE([SW_ULONG_TO_FP_BOTTOM_BIT_WORKS], [1], |