kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-09-04 20:04:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

further reversion of previously applied floating point stuff for expr2

Browse Source 
git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@74628 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Steve Murphy
2007-07-11 18:11:44 +00:00
parent 8718f08cbd
commit 19041621f6
3 changed files with 7 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
UPGRADE.txt
View File

@@ -101,12 +101,6 @@ PBX Core:
if your dialplan relies on the ability to 'run off the end' of an extension
and wait for a new extension without using WaitExten() to accomplish that,
you will need set autofallthrough to 'no' in your extensions.conf file.
* The ast_expr2 stuff has been modified to handle floating-point numbers.
Numbers of the format D.D are now acceptable input for the expr parser,
Where D is a string of base-10 digits. All math is now done in "long double",
if it is available on your compiler/architecture. This was half-way between
a bug-fix (because the MATH func returns fp by default), and an enhancement.
Command Line Interface:

21
doc/channelvariables.txt
View File

@@ -212,19 +212,19 @@ with equal precedence are grouped within { } symbols.
an empty string or zero; otherwise, returns zero.
expr1 {=, >, >=, <, <=, !=} expr2
Return the results of floating pt. comparison if both arguments are
numbers; otherwise, returns the results of string comparison
Return the results of integer comparison if both arguments are
integers; otherwise, returns the results of string comparison
using the locale-specific collation sequence. The result of each
comparison is 1 if the specified relation is true, or 0 if the
relation is false.
expr1 {+, -} expr2
Return the results of addition or subtraction of
Return the results of addition or subtraction of integer-valued
arguments.
expr1 {*, /, %} expr2
Return the results of multiplication, division, or
remainder of arguments. (floating point [long double if possible]).
Return the results of multiplication, integer division, or
remainder of integer-valued arguments.
- expr1
Return the result of subtracting expr1 from 0.
@@ -322,13 +322,10 @@ __________________________
NUMBERS VS STRINGS
--------------------------
Tokens consisting only of numbers are converted to long doubles for
most of the operators (80-128 bits, depending on the compiler/platform/etc).
This means that overflows can occur when the
Tokens consisting only of numbers are converted to 64-bit numbers for
most of the operators. This means that overflows can occur when the
numbers get above 18 digits. Warnings will appear in the logs in this
case.
If "long double" is not available, then "double" is used (usually 64 bit floating
point numbers).
___________________________
CONDITIONALS
---------------------------
@@ -487,10 +484,6 @@ of possible concern with "legacy" extension.conf files:
9. Unary operators '-' and '!' were made right associative.
10. All arithmetic operations are now done in floating point (long double
if possible, plain double otherwise).
--------------------------------------------------------
DEBUGGING HINTS FOR $[ ] EXPRESSIONS
--------------------------------------------------------

4
utils/expr2.testinput
View File

@@ -90,7 +90,3 @@ x != x
3
something
043
2.1+4.2
1.500003+1.4999999999999898989898989898989898989889898
1/4