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Overview
| Comment: | When converting from a BLOB value in the tointeger() and toreal() SQL functions, make sure that endianness of the machine does not matter. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | toTypeFuncs |
| Files: | files | file ages | folders |
| SHA1: |
94c4cdc50d2753c859e494d53cebd09e |
| User & Date: | mistachkin 2013-09-06 20:30:53 |
Context
|
2013-09-06
| ||
| 21:41 | Add the ability to generate assembly listing files using the MSVC makefile. check-in: 6caa2cd1 user: mistachkin tags: toTypeFuncs | |
| 20:30 | When converting from a BLOB value in the tointeger() and toreal() SQL functions, make sure that endianness of the machine does not matter. check-in: 94c4cdc5 user: mistachkin tags: toTypeFuncs | |
|
2013-09-04
| ||
| 00:58 | Additional test cases for the tointeger() and toreal() SQL functions when converting from a BLOB. check-in: e1814452 user: mistachkin tags: toTypeFuncs | |
Changes
Changes to src/func.c.
962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 ... 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 .... 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 .... 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 |
sqlite3_result_text(context, "NULL", 4, SQLITE_STATIC);
break;
}
}
}
/*
** tointeger(X): If X is any value (integer, double, or string) that can
** be losslessly converted into an integer, then make the conversion and
** return the result. Otherwise, return NULL.
*/
static void tointegerFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
................................................................................
}
case SQLITE_BLOB: {
const unsigned char *zBlob = sqlite3_value_blob(argv[0]);
if( zBlob ){
int nBlob = sqlite3_value_bytes(argv[0]);
if( nBlob==sizeof(i64) ){
i64 iVal;
memcpy(&iVal, zBlob, sizeof(i64));
sqlite3_result_int64(context, iVal);
}
}
break;
}
case SQLITE_TEXT: {
const unsigned char *zStr = sqlite3_value_text(argv[0]);
................................................................................
assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
break;
}
}
}
/*
** toreal(X): If X can be losslessly converted into a real number, then
** do so and return that real number. Otherwise return NULL.
*/
#if defined(_MSC_VER)
#pragma optimize("", off)
#endif
static void torealFunc(
sqlite3_context *context,
int argc,
................................................................................
}
case SQLITE_BLOB: {
const unsigned char *zBlob = sqlite3_value_blob(argv[0]);
if( zBlob ){
int nBlob = sqlite3_value_bytes(argv[0]);
if( nBlob==sizeof(double) ){
double rVal;
memcpy(&rVal, zBlob, sizeof(double));
sqlite3_result_double(context, rVal);
}
}
break;
}
case SQLITE_TEXT: {
const unsigned char *zStr = sqlite3_value_text(argv[0]);
|
| | > > > > > > > > | > > | | > > > > > > > > | > |
962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 ... 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 .... 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 .... 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 |
sqlite3_result_text(context, "NULL", 4, SQLITE_STATIC);
break;
}
}
}
/*
** tointeger(X): If X is any value (integer, double, blob, or string) that
** can be losslessly converted into an integer, then make the conversion and
** return the result. Otherwise, return NULL.
*/
static void tointegerFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
................................................................................
}
case SQLITE_BLOB: {
const unsigned char *zBlob = sqlite3_value_blob(argv[0]);
if( zBlob ){
int nBlob = sqlite3_value_bytes(argv[0]);
if( nBlob==sizeof(i64) ){
i64 iVal;
if( SQLITE_BIGENDIAN ){
int i;
unsigned char *zBlobRev = contextMalloc(context, nBlob);
if( !zBlobRev ) break;
for(i=0; i<nBlob; i++) zBlobRev[i] = zBlob[nBlob-1-i];
memcpy(&iVal, zBlobRev, sizeof(i64));
sqlite3_free(zBlobRev);
}else{
memcpy(&iVal, zBlob, sizeof(i64));
}
sqlite3_result_int64(context, iVal);
}
}
break;
}
case SQLITE_TEXT: {
const unsigned char *zStr = sqlite3_value_text(argv[0]);
................................................................................
assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
break;
}
}
}
/*
** toreal(X): If X is any value (integer, double, blob, or string) that can
** be losslessly converted into a real number, then do so and return that
** real number. Otherwise return NULL.
*/
#if defined(_MSC_VER)
#pragma optimize("", off)
#endif
static void torealFunc(
sqlite3_context *context,
int argc,
................................................................................
}
case SQLITE_BLOB: {
const unsigned char *zBlob = sqlite3_value_blob(argv[0]);
if( zBlob ){
int nBlob = sqlite3_value_bytes(argv[0]);
if( nBlob==sizeof(double) ){
double rVal;
if( SQLITE_LITTLEENDIAN ){
int i;
unsigned char *zBlobRev = contextMalloc(context, nBlob);
if( !zBlobRev ) break;
for(i=0; i<nBlob; i++) zBlobRev[i] = zBlob[nBlob-1-i];
memcpy(&rVal, zBlobRev, sizeof(double));
sqlite3_free(zBlobRev);
}else{
memcpy(&rVal, zBlob, sizeof(double));
}
sqlite3_result_double(context, rVal);
}
}
break;
}
case SQLITE_TEXT: {
const unsigned char *zStr = sqlite3_value_text(argv[0]);
|
Changes to test/func4.test.
663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 |
ifcapable floatingpoint {
do_execsql_test func4-6.1.$i.2 [subst {
SELECT toreal(x'[string repeat 01 $i]');
}] {{}}
}
}
proc swapHexBytes { value } {
if {[string length $value] % 2 != 0} {
error "value \"$value\" must have an even number of characters"
}
if {![string is xdigit -strict $value]} then {
error "value \"$value\" must contain only hexadecimal digits"
}
join [lreverse [regexp -all -inline {.{2}} $value]] ""
}
proc swapIntegerHexBytes { value } {
if {![info exists ::tcl_platform(byteOrder)] || \
$::tcl_platform(byteOrder) eq "littleEndian"} {
return $value
}
return [swapHexBytes $value]
}
proc swapDoubleHexBytes { value } {
if {![info exists ::tcl_platform(byteOrder)] || \
$::tcl_platform(byteOrder) ne "littleEndian"} {
return $value
}
return [swapHexBytes $value]
}
do_execsql_test func4-6.2.1 [subst {
SELECT tointeger(x'[swapIntegerHexBytes 0102030405060708]');
}] {578437695752307201}
do_execsql_test func4-6.2.2 [subst {
SELECT tointeger(x'[swapIntegerHexBytes 0807060504030201]');
}] {72623859790382856}
ifcapable floatingpoint {
do_execsql_test func4-6.3.1 [subst {
SELECT toreal(x'[swapDoubleHexBytes ffefffffffffffff]');
}] {-1.7976931348623157e+308}
do_execsql_test func4-6.3.2 [subst {
SELECT toreal(x'[swapDoubleHexBytes 8010000000000000]');
}] {-2.2250738585072014e-308}
do_execsql_test func4-6.3.3 [subst {
SELECT toreal(x'[swapDoubleHexBytes c000000000000000]');
}] {-2.0}
do_execsql_test func4-6.3.4 [subst {
SELECT toreal(x'[swapDoubleHexBytes bff0000000000000]');
}] {-1.0}
do_execsql_test func4-6.3.5 [subst {
SELECT toreal(x'[swapDoubleHexBytes 8000000000000000]');
}] {-0.0}
do_execsql_test func4-6.3.6 [subst {
SELECT toreal(x'[swapDoubleHexBytes 0000000000000000]');
}] {0.0}
do_execsql_test func4-6.3.7 [subst {
SELECT toreal(x'[swapDoubleHexBytes 3ff0000000000000]');
}] {1.0}
do_execsql_test func4-6.3.8 [subst {
SELECT toreal(x'[swapDoubleHexBytes 4000000000000000]');
}] {2.0}
do_execsql_test func4-6.3.9 [subst {
SELECT toreal(x'[swapDoubleHexBytes 0010000000000000]');
}] {2.2250738585072014e-308}
do_execsql_test func4-6.3.10 [subst {
SELECT toreal(x'[swapDoubleHexBytes 7fefffffffffffff]');
}] {1.7976931348623157e+308}
do_execsql_test func4-6.3.11 [subst {
SELECT toreal(x'[swapDoubleHexBytes 8000000000000001]');
}] {-5e-324}
do_execsql_test func4-6.3.12 [subst {
SELECT toreal(x'[swapDoubleHexBytes 800fffffffffffff]');
}] {-2.225073858507201e-308}
do_execsql_test func4-6.3.13 [subst {
SELECT toreal(x'[swapDoubleHexBytes 0000000000000001]');
}] {5e-324}
do_execsql_test func4-6.3.14 [subst {
SELECT toreal(x'[swapDoubleHexBytes 000fffffffffffff]');
}] {2.225073858507201e-308}
do_execsql_test func4-6.3.15 [subst {
SELECT toreal(x'[swapDoubleHexBytes fff0000000000000]');
}] {-Inf}
do_execsql_test func4-6.3.16 [subst {
SELECT toreal(x'[swapDoubleHexBytes 7ff0000000000000]');
}] {Inf}
do_execsql_test func4-6.3.17 [subst {
SELECT toreal(x'[swapDoubleHexBytes fff8000000000000]');
}] {{}}
do_execsql_test func4-6.3.18 [subst {
SELECT toreal(x'[swapDoubleHexBytes fff0000000000001]');
}] {{}}
do_execsql_test func4-6.3.19 [subst {
SELECT toreal(x'[swapDoubleHexBytes fff7ffffffffffff]');
}] {{}}
do_execsql_test func4-6.3.20 [subst {
SELECT toreal(x'[swapDoubleHexBytes 7ff0000000000001]');
}] {{}}
do_execsql_test func4-6.3.21 [subst {
SELECT toreal(x'[swapDoubleHexBytes 7ff7ffffffffffff]');
}] {{}}
do_execsql_test func4-6.3.22 [subst {
SELECT toreal(x'[swapDoubleHexBytes fff8000000000001]');
}] {{}}
do_execsql_test func4-6.3.23 [subst {
SELECT toreal(x'[swapDoubleHexBytes ffffffffffffffff]');
}] {{}}
do_execsql_test func4-6.3.24 [subst {
SELECT toreal(x'[swapDoubleHexBytes 7ff8000000000000]');
}] {{}}
do_execsql_test func4-6.3.25 [subst {
SELECT toreal(x'[swapDoubleHexBytes 7fffffffffffffff]');
}] {{}}
}
set tcl_precision $saved_tcl_precision
unset saved_tcl_precision
finish_test
|
< < < < < < < < < < < < < < < < < < < < < < < < < < | | | | | | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | | < > | |
663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 |
ifcapable floatingpoint {
do_execsql_test func4-6.1.$i.2 [subst {
SELECT toreal(x'[string repeat 01 $i]');
}] {{}}
}
}
do_execsql_test func4-6.2.1 {
SELECT tointeger(x'0102030405060708');
} {578437695752307201}
do_execsql_test func4-6.2.2 {
SELECT tointeger(x'0807060504030201');
} {72623859790382856}
ifcapable floatingpoint {
do_execsql_test func4-6.3.1 {
SELECT toreal(x'ffefffffffffffff');
} {-1.7976931348623157e+308}
do_execsql_test func4-6.3.2 {
SELECT toreal(x'8010000000000000');
} {-2.2250738585072014e-308}
do_execsql_test func4-6.3.3 {
SELECT toreal(x'c000000000000000');
} {-2.0}
do_execsql_test func4-6.3.4 {
SELECT toreal(x'bff0000000000000');
} {-1.0}
do_execsql_test func4-6.3.5 {
SELECT toreal(x'8000000000000000');
} {-0.0}
do_execsql_test func4-6.3.6 {
SELECT toreal(x'0000000000000000');
} {0.0}
do_execsql_test func4-6.3.7 {
SELECT toreal(x'3ff0000000000000');
} {1.0}
do_execsql_test func4-6.3.8 {
SELECT toreal(x'4000000000000000');
} {2.0}
do_execsql_test func4-6.3.9 {
SELECT toreal(x'0010000000000000');
} {2.2250738585072014e-308}
do_execsql_test func4-6.3.10 {
SELECT toreal(x'7fefffffffffffff');
} {1.7976931348623157e+308}
do_execsql_test func4-6.3.11 {
SELECT toreal(x'8000000000000001');
} {-5e-324}
do_execsql_test func4-6.3.12 {
SELECT toreal(x'800fffffffffffff');
} {-2.225073858507201e-308}
do_execsql_test func4-6.3.13 {
SELECT toreal(x'0000000000000001');
} {5e-324}
do_execsql_test func4-6.3.14 {
SELECT toreal(x'000fffffffffffff');
} {2.225073858507201e-308}
do_execsql_test func4-6.3.15 {
SELECT toreal(x'fff0000000000000');
} {-Inf}
do_execsql_test func4-6.3.16 {
SELECT toreal(x'7ff0000000000000');
} {Inf}
do_execsql_test func4-6.3.17 {
SELECT toreal(x'fff8000000000000');
} {{}}
do_execsql_test func4-6.3.18 {
SELECT toreal(x'fff0000000000001');
} {{}}
do_execsql_test func4-6.3.19 {
SELECT toreal(x'fff7ffffffffffff');
} {{}}
do_execsql_test func4-6.3.20 {
SELECT toreal(x'7ff0000000000001');
} {{}}
do_execsql_test func4-6.3.21 {
SELECT toreal(x'7ff7ffffffffffff');
} {{}}
do_execsql_test func4-6.3.22 {
SELECT toreal(x'fff8000000000001');
} {{}}
do_execsql_test func4-6.3.23 {
SELECT toreal(x'ffffffffffffffff');
} {{}}
do_execsql_test func4-6.3.24 {
SELECT toreal(x'7ff8000000000000');
} {{}}
do_execsql_test func4-6.3.25 {
SELECT toreal(x'7fffffffffffffff');
} {{}}
}
set tcl_precision $saved_tcl_precision
unset saved_tcl_precision
finish_test
|