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Reinstate the fpdecode() SQL function for testing, but only when compiled

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with SQLITE_DEBUG.

FossilOrigin-Name: 07eab52e0801bb0e4743b304a06ad16e18cdf8eaa18c0faf8d47a1f5d8576ea0
This commit is contained in:
drh
2023-07-01 18:33:26 +00:00
parent 17c20bb15e
commit 453be55b85
4 changed files with 43 additions and 9 deletions
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34
src/func.c
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@@ -2371,6 +2371,37 @@ static void signFunc(
sqlite3_result_int(context, x<0.0 ? -1 : x>0.0 ? +1 : 0);
}
#ifdef SQLITE_DEBUG
/*
** Implementation of fpdecode(x,y,z) function.
**
** x is a real number that is to be decoded. y is the precision.
** z is the maximum real precision.
*/
static void fpdecodeFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
FpDecode s;
double x;
int y, z;
char zBuf[100];
UNUSED_PARAMETER(argc);
assert( argc==3 );
x = sqlite3_value_double(argv[0]);
y = sqlite3_value_int(argv[1]);
z = sqlite3_value_int(argv[2]);
sqlite3FpDecode(&s, x, y, z);
if( s.isSpecial==2 ){
sqlite3_snprintf(sizeof(zBuf), zBuf, "NaN");
}else{
sqlite3_snprintf(sizeof(zBuf), zBuf, "%c%.*s/%d", s.sign, s.n, s.z, s.iDP);
}
sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
}
#endif /* SQLITE_DEBUG */
/*
** All of the FuncDef structures in the aBuiltinFunc[] array above
** to the global function hash table. This occurs at start-time (as
@@ -2442,6 +2473,9 @@ void sqlite3RegisterBuiltinFunctions(void){
FUNCTION(unicode, 1, 0, 0, unicodeFunc ),
FUNCTION(char, -1, 0, 0, charFunc ),
FUNCTION(abs, 1, 0, 0, absFunc ),
#ifdef SQLITE_DEBUG
FUNCTION(fpdecode, 3, 0, 0, fpdecodeFunc ),
#endif
#ifndef SQLITE_OMIT_FLOATING_POINT
FUNCTION(round, 1, 0, 0, roundFunc ),
FUNCTION(round, 2, 0, 0, roundFunc ),