Hi,
a Single and Integer variable each take 4 bytes.
(check on : http://msdn.microsoft.com/library/de...rpdatatype.asp)
But how come then that the range for valid values for an integer is
-2,147,483,648 through 2,147,483,647
(OK: 2pow32 = 4,294,967,296 e09 different posibillities )
and for a single
-3.4028235E+38 through -1.401298E-45 for negative values
1.401298E-45 through 3.4028235E+38 for positive values.
so many more values with the same amount of 32 bits ????
Any logical explanation for this ?
thnx
Christian 2  1084 
"Chris" <ch********@pan dora.be> schrieb Hi,
a Single and Integer variable each take 4 bytes.
(check on :
http://msdn.microsoft.com/library/de...rpdatatype.asp)
But how come then that the range for valid values for an integer
is
-2,147,483,648 through 2,147,483,647
(OK: 2pow32 = 4,294,967,296 e09 different posibillities )
and for a single
-3.4028235E+38 through -1.401298E-45 for negative values
1.401298E-45 through 3.4028235E+38 for positive values.
so many more values with the same amount of 32 bits ????
Any logical explanation for this ?
3.4028235E+38 is a large number, but the first ~30 decimal places are zero.
In other words, in opposite to an integer value, the step size for a high
single value is not 1 but it is 1E+38, so there are "some" numbers between
missing (higher numbers->less accuracy). The total number of different
Integer values is (at least approximately) equal to the total number of
different Single values.
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
* "Chris" <ch********@pan dora.be> scripsit: and for a single
-3.4028235E+38 through -1.401298E-45 for negative values
1.401298E-45 through 3.4028235E+38 for positive values.
so many more values with the same amount of 32 bits ????
<http://research.micros oft.com/~hollasch/cgindex/coding/ieeefloat.html>
<http://support.microso ft.com/default.aspx?sc id=kb;de;42980>
--
Herfried K. Wagner
MVP · VB Classic, VB.NET
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Hi,
a Single and Integer variable each take 4 bytes.
(check on :
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vblr7/html/vagrpdatatype.asp)
But how come then that the range for valid values for an integer is
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(OK: 2pow32 = 4,294,967,296 E+09 different posibillities )
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Kind regards
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