mirror of
https://github.com/HDFGroup/hdf5.git
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b9a27fddaa
* commit '0d05cb607e5951f3a28a101be56ca194022a7fa1': Reverted addition of The HDF Group copyright headers to 3rd party CMake files for Java. Add Copyright headers to 90 files (mostly .cmake files) without Copyright headers. Add "Copyright by The HDF Group."" to copyright header.
279 lines
8.7 KiB
C
279 lines
8.7 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#ifdef H5_LDOUBLE_TO_LONG_SPECIAL_TEST
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#include <string.h>
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#include <stdlib.h>
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int main(void)
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{
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long double ld = 20041683600089727.779961L;
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long ll;
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unsigned long ull;
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unsigned char s[16];
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unsigned char s2[8];
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int ret = 1;
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if(sizeof(long double) == 16 && sizeof(long) == 8) {
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/*make sure the long double type has 16 bytes in size and
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* 11 bits of exponent. If it is,
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*the bit sequence should be like below. It's not
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*a decent way to check but this info isn't available. */
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memcpy(s, &ld, 16);
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if(s[0]==0x43 && s[1]==0x51 && s[2]==0xcc && s[3]==0xf3 &&
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s[4]==0x85 && s[5]==0xeb && s[6]==0xc8 && s[7]==0xa0 &&
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s[8]==0xbf && s[9]==0xcc && s[10]==0x2a && s[11]==0x3c) {
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/* Assign the hexadecimal value of long double type. */
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s[0]=0x43; s[1]=0x51; s[2]=0xcc; s[3]=0xf3;
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s[4]=0x85; s[5]=0xeb; s[6]=0xc8; s[7]=0xa0;
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s[8]=0xbf; s[9]=0xcc; s[10]=0x2a; s[11]=0x3c;
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s[12]=0x3d; s[13]=0x85; s[14]=0x56; s[15]=0x20;
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memcpy(&ld, s, 16);
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ll = (long)ld;
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memcpy(s2, &ll, 8);
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/* The library's algorithm converts it to 0x 00 47 33 ce 17 af 22 82
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* and gets wrong value 20041683600089730 on the IBM Power6 Linux.
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* But the IBM Power6 Linux converts it to 0x00 47 33 ce 17 af 22 7f
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* and gets the correct value 20041683600089727. It uses some special
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* algorithm. We're going to define the macro and skip the test until
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* we can figure out how they do it. */
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if(s2[0]==0x00 && s2[1]==0x47 && s2[2]==0x33 && s2[3]==0xce &&
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s2[4]==0x17 && s2[5]==0xaf && s2[6]==0x22 && s2[7]==0x7f)
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ret = 0;
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ull = (unsigned long)ld;
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memcpy(s2, &ull, 8);
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/* The unsigned long is the same as signed long. */
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if(s2[0]==0x00 && s2[1]==0x47 && s2[2]==0x33 && s2[3]==0xce &&
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s2[4]==0x17 && s2[5]==0xaf && s2[6]==0x22 && s2[7]==0x7f)
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ret = 0;
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}
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}
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done:
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exit(ret);
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}
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#endif
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#ifdef H5_LONG_TO_LDOUBLE_SPECIAL_TEST
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#include <string.h>
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#include <stdlib.h>
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int main(void)
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{
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long double ld;
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long ll;
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unsigned long ull;
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unsigned char s[16];
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int flag=0, ret=1;
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/*Determine if long double has 16 byte in size, 11 bit exponent, and
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*the bias is 0x3ff */
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if(sizeof(long double) == 16) {
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ld = 1.0L;
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memcpy(s, &ld, 16);
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if(s[0]==0x3f && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 &&
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s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00)
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flag = 1;
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}
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if(flag==1 && sizeof(long)==8) {
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ll = 0x003fffffffffffffL;
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ld = (long double)ll;
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memcpy(s, &ld, 16);
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/* The library converts the value to 0x434fffffffffffff8000000000000000.
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* In decimal it is 18014398509481982.000000, one value short of the original.
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* The IBM Power6 Linux converts it to 0x4350000000000000bff0000000000000.
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* The value is correct in decimal. It uses some special
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* algorithm. We're going to define the macro and skip the test until
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* we can figure out how they do it. */
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if(s[0]==0x43 && s[1]==0x50 && s[2]==0x00 && s[3]==0x00 &&
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s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00 &&
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s[8]==0xbf && s[9]==0xf0 && s[10]==0x00 && s[11]==0x00 &&
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s[12]==0x00 && s[13]==0x00 && s[14]==0x00 && s[15]==0x00)
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ret = 0;
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}
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if(flag==1 && sizeof(unsigned long)==8) {
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ull = 0xffffffffffffffffUL;
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ld = (long double)ull;
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memcpy(s, &ld, 16);
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/* Use a different value from signed long to test. The problem is the same
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* for both long and unsigned long. The value is 18446744073709551615.
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* The library converts the value to 0x43effffffffffffffe000000000000000.
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* In decimal it's 18446744073709548544.000000, very different from the original.
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* The IBM Power6 Linux converts it to 0x43f0000000000000bff0000000000000.
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* The value is correct in decimal. It uses some special
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* algorithm. We're going to define the macro and skip the test until
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* we can figure out how they do it. */
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if(s[0]==0x43 && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 &&
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s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00 &&
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s[8]==0xbf && s[9]==0xf0 && s[10]==0x00 && s[11]==0x00 &&
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s[12]==0x00 && s[13]==0x00 && s[14]==0x00 && s[15]==0x00)
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ret = 0;
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}
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done:
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exit(ret);
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}
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#endif
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#ifdef H5_LDOUBLE_TO_LLONG_ACCURATE_TEST
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#include <string.h>
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#include <stdlib.h>
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int main(void)
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{
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long double ld = 20041683600089727.779961L;
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long long ll;
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unsigned long long ull;
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unsigned char s[16];
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int ret = 0;
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if(sizeof(long double) == 16) {
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/*make sure the long double type is the same as the failing type
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*which has 16 bytes in size and 11 bits of exponent. If it is,
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*the bit sequence should be like below. It's not
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*a decent way to check but this info isn't available. */
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memcpy(s, &ld, 16);
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if(s[0]==0x43 && s[1]==0x51 && s[2]==0xcc && s[3]==0xf3 &&
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s[4]==0x85 && s[5]==0xeb && s[6]==0xc8 && s[7]==0xa0 &&
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s[8]==0xbf && s[9]==0xcc && s[10]==0x2a && s[11]==0x3c) {
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/*slightly adjust the bit sequence (s[8]=0xdf). The converted
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*values will go wild on Mac OS 10.4 and IRIX64 6.5.*/
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s[0]=0x43; s[1]=0x51; s[2]=0xcc; s[3]=0xf3;
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s[4]=0x85; s[5]=0xeb; s[6]=0xc8; s[7]=0xa0;
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s[8]=0xdf; s[9]=0xcc; s[10]=0x2a; s[11]=0x3c;
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s[12]=0x3d; s[13]=0x85; s[14]=0x56; s[15]=0x20;
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memcpy(&ld, s, 16);
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ll = (long long)ld;
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ull = (unsigned long long)ld;
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if(ll != 20041683600089728 || ull != 20041683600089728)
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ret = 1;
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}
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}
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done:
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exit(ret);
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}
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#endif
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#ifdef H5_LLONG_TO_LDOUBLE_CORRECT_TEST
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#include <string.h>
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#include <stdlib.h>
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int main(void)
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{
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long double ld;
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long long ll;
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unsigned long long ull;
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unsigned char s[16];
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int flag=0, ret=0;
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/*Determine if long double has 16 byte in size, 11 bit exponent, and
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*the bias is 0x3ff */
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if(sizeof(long double) == 16) {
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ld = 1.0L;
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memcpy(s, &ld, 16);
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if(s[0]==0x3f && s[1]==0xf0 && s[2]==0x00 && s[3]==0x00 &&
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s[4]==0x00 && s[5]==0x00 && s[6]==0x00 && s[7]==0x00)
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flag = 1;
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}
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if(flag==1 && sizeof(long long)==8) {
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ll = 0x01ffffffffffffffLL;
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ld = (long double)ll;
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memcpy(s, &ld, 16);
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/*Check if the bit sequence is as supposed to be*/
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if(s[0]!=0x43 || s[1]!=0x7f || s[2]!=0xff || s[3]!=0xff ||
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s[4]!=0xff || s[5]!=0xff || s[6]!=0xff || s[7]!=0xff ||
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s[8]!=0xf0 || s[9]!=0x00 || s[10]!=0x00 || s[11]!=0x00)
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ret = 1;
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}
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if(flag==1 && sizeof(unsigned long long)==8) {
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ull = 0x01ffffffffffffffULL;
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ld = (long double)ull;
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memcpy(s, &ld, 16);
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if(s[0]!=0x43 || s[1]!=0x7f || s[2]!=0xff || s[3]!=0xff ||
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s[4]!=0xff || s[5]!=0xff || s[6]!=0xff || s[7]!=0xff ||
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s[8]!=0xf0 || s[9]!=0x00 || s[10]!=0x00 || s[11]!=0x00)
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ret = 1;
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}
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done:
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exit(ret);
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}
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#endif
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#ifdef H5_NO_ALIGNMENT_RESTRICTIONS_TEST
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#include <stdlib.h>
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#include <string.h>
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typedef struct {
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size_t len;
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void *p;
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} hvl_t;
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#ifdef FC_DUMMY_MAIN
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#ifndef FC_DUMMY_MAIN_EQ_F77
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# ifdef __cplusplus
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extern "C"
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# endif
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int FC_DUMMY_MAIN()
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{ return 1;}
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#endif
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#endif
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int
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main ()
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{
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char *chp = "beefs";
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char **chpp = malloc (2 * sizeof (char *));
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char **chpp2;
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hvl_t vl = { 12345, (void *) chp };
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hvl_t *vlp;
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hvl_t *vlp2;
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memcpy ((void *) ((char *) chpp + 1), &chp, sizeof (char *));
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chpp2 = (char **) ((char *) chpp + 1);
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if (strcmp (*chpp2, chp)) {
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free (chpp);
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return 1;
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}
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free (chpp);
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vlp = malloc (2 * sizeof (hvl_t));
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memcpy ((void *) ((char *) vlp + 1), &vl, sizeof (hvl_t));
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vlp2 = (hvl_t *) ((char *) vlp + 1);
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if (vlp2->len != vl.len || vlp2->p != vl.p) {
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free (vlp);
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return 1;
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}
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free (vlp);
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;
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return 0;
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}
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#endif
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