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Overview
| Comment: | Get the behavior of SQLITE_HAVE_ISNAN right. It was reversed in check-in (6517). Ticket #3809. (CVS 6518) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 97c6ea2368556b2a9a914ba2322085e3 |
| User & Date: | drh 2009-04-17 15:18:48 |
Context
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2009-04-17
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| 16:54 | Revise the implementation of sqlite3_initialize() slightly in order to make it more easily testable. The functionality should be unchanged. (CVS 6519) check-in: bb1a390a user: drh tags: trunk | |
| 15:18 | Get the behavior of SQLITE_HAVE_ISNAN right. It was reversed in check-in (6517). Ticket #3809. (CVS 6518) check-in: 97c6ea23 user: drh tags: trunk | |
| 11:57 | Add the SQLITE_HAVE_ISNAN compile-time option which, if present, causes SQLite to use the math library isnan() function rather than its own homebrew implementation of isnan(). (CVS 6517) check-in: 54d23521 user: drh tags: trunk | |
Changes
Changes to src/util.c.
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** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** ** $Id: util.c,v 1.250 2009/04/17 11:57:22 drh Exp $ */ #include "sqliteInt.h" #include <stdarg.h> #include <math.h> /* ** Routine needed to support the testcase() macro. ................................................................................ /* ** 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){ #if defined(SQLITE_HAVE_ISNAN) /* ** Systems that support the isnan() library function should probably ** make use of it by compiling with -DSQLITE_HAVE_ISNAN. But we have ** found that many systems do not have a working isnan() function so ** this implementation is provided as an alternative. ** ** This NaN test sometimes fails if compiled on GCC with -ffast-math. |
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** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** ** $Id: util.c,v 1.251 2009/04/17 15:18:48 drh Exp $ */ #include "sqliteInt.h" #include <stdarg.h> #include <math.h> /* ** Routine needed to support the testcase() macro. ................................................................................ /* ** 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){ #if !defined(SQLITE_HAVE_ISNAN) /* ** Systems that support the isnan() library function should probably ** make use of it by compiling with -DSQLITE_HAVE_ISNAN. But we have ** found that many systems do not have a working isnan() function so ** this implementation is provided as an alternative. ** ** This NaN test sometimes fails if compiled on GCC with -ffast-math. |