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-rw-r--r--configure.ac65
1 files changed, 0 insertions, 65 deletions
diff --git a/configure.ac b/configure.ac
index 51e8158..1069b60 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2570,71 +2570,6 @@ else
fi
## ----------------------------------------------------------------------
-## Set the flag to indicate that the machine can accurately convert
-## '(unsigned) long long' to 'long double' values. (This flag should be set for
-## all machines, except for Mac OS 10.4, when the bit sequences are 003fff...,
-## 007fff..., 00ffff..., 01ffff..., ..., 7fffff..., the converted values are twice
-## as big as they should be.
-##
-AC_MSG_CHECKING([if correctly converting (unsigned) long long to long double values])
-
-if test ${ac_cv_sizeof_long_double} = 0; then
- hdf5_cv_llong_to_ldouble_correct=${hdf5_cv_llong_to_ldouble_correct=no}
-else
- AC_CACHE_VAL([hdf5_cv_llong_to_ldouble_correct],
- [AC_TRY_RUN([
- 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);
- }
- ], [hdf5_cv_llong_to_ldouble_correct=yes], [hdf5_cv_llong_to_ldouble_correct=no],)])
-fi
-
-if test ${hdf5_cv_llong_to_ldouble_correct} = "yes"; then
- AC_DEFINE([LLONG_TO_LDOUBLE_CORRECT], [1],
- [Define if your system can convert (unsigned) long long to long double values correctly.])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-
-## ----------------------------------------------------------------------
## Set the flag to indicate that the machine generates bad code
## for the H5VM_log2_gen() routine in src/H5VMprivate.h
## (This flag should be set to no for all machines, except for SGI IRIX64,