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Comment:Restore the use of system isnan() that was removed by check-in [ea748edecb261f2b]. See forum thread d7c530ac587f59e6.
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SHA3-256: b3cfe23bec0b95ca673802526704200e2396df715fdded72aa71addd7f47e0e1
User & Date: drh 2021-09-06 11:44:19
Context
2021-09-06
15:59
Fix an issue in the "shrink.test" test script reported by forum post 90a74bd618. (check-in: 6c3734ed user: drh tags: trunk)
11:44
Restore the use of system isnan() that was removed by check-in [ea748edecb261f2b]. See forum thread d7c530ac587f59e6. (check-in: b3cfe23b user: drh tags: trunk)
2021-09-03
18:11
Fix an assertion fault in pcache introduced by [4bc93658aa563f2f] and detected by OSSFuzz. Test case in TH3. (check-in: 2262a494 user: drh tags: trunk)
Changes
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Changes to src/util.c.

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  return xCallback ? xCallback(iTest) : SQLITE_OK;
}
#endif

#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Return true if the floating point value is Not a Number (NaN).



*/
int sqlite3IsNaN(double x){


  u64 y;
  memcpy(&y,&x,sizeof(y));





  return IsNaN(y);
}
#endif /* SQLITE_OMIT_FLOATING_POINT */

/*
** Compute a string length that is limited to what can be stored in
** lower 30 bits of a 32-bit signed integer.
**








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  return xCallback ? xCallback(iTest) : SQLITE_OK;
}
#endif

#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Return true if the floating point value is Not a Number (NaN).
**
** Use the math library isnan() function if compiled with SQLITE_HAVE_ISNAN.
** Otherwise, we have our own implementation that works on most systems.
*/
int sqlite3IsNaN(double x){
  int rc;   /* The value return */
#if !SQLITE_HAVE_ISNAN && !HAVE_ISNAN
  u64 y;
  memcpy(&y,&x,sizeof(y));
  rc = IsNaN(y);
#else
  rc = isnan(x);
#endif /* HAVE_ISNAN */
  testcase( rc );
  return rc;
}
#endif /* SQLITE_OMIT_FLOATING_POINT */

/*
** Compute a string length that is limited to what can be stored in
** lower 30 bits of a 32-bit signed integer.
**
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