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<html>
<head>
<title>
C Guide--2.5 limits.h
</title>
<!-- Changed by: eric huss, 12-Mar-1997 -->
</head>
<body text="#000000" bgcolor="#FFFFFF">
<center>
<table border=0 width=100%>
<tr>
<td align=left width=20% valign=top>
<a href="2.4.html">
<img src="left.gif" border=0>
Previous Section<br>
2.4 float.h</a></td>
<td align=center width=60% valign=top>
| <a href="index.html">Table of Contents</a> |
<a href="index2.html">Index</a> |</td>
<td align=right width=20% valign=top>
<a href="2.6.html">
Next Section
<img src="right.gif" border=0><br>
2.6 locale.h</a></td>
</tr>
</table>
</center>
<hr>
<h1> 2.5 limits.h</h1>
<p>
The limits header defines the characteristics of variable types.
<p>
<h2>2.5.1 Defined Values</h2>
<p>
The following values are defined with the <code><b>#define</b></code> directive. These values are
implementation-specific, but may not be any lower than what is given here.
<table border=1>
<tr>
<td>
<code><b>CHAR_BIT 8</b></code>
</td>
<td>
Number of bits in a byte.
</td>
</tr>
<tr>
<td>
<code><b>SCHAR_MIN -127</b></code>
</td>
<td>
Minimum value for a signed char.
</td>
</tr>
<tr>
<td>
<code><b>SCHAR_MAX +127</b></code>
</td>
<td>
Maximum value for a signed char.
</td>
</tr>
<tr>
<td>
<code><b>UCHAR_MAX 255</b></code>
</td>
<td>
Maximum value for an unsigned char.
</td>
</tr>
<tr>
<td>
<code><b>CHAR_MIN<br>
CHAR_MAX</b></code>
</td>
<td>
These define the minimum and maximum values for a char. If a char is being
represented as a signed integer, then their values are the same as the signed char (<code><b>SCHAR</b></code>)
values. Otherwise <code><b>CHAR_MIN</b></code> is 0 and <code><b>CHAR_MAX</b></code> is the same as <code><b>UCHAR_MAX</b></code>.
</td>
</tr>
<tr>
<td>
<code><b>MB_LEN_MAX 1</b></code>
</td>
<td>
Maximum number of bytes in a multibyte character.
</td>
</tr>
<tr>
<td>
<code><b>SHRT_MIN -32767</b></code>
</td>
<td>
Minimum value for a short int.
</td>
</tr>
<tr>
<td>
<code><b>SHRT_MAX +32767</b></code>
</td>
<td>
Maximum value for a short int.
</td>
</tr>
<tr>
<td>
<code><b>USHRT_MAX 65535</b></code>
</td>
<td>
Maximum value for an unsigned short int.
</td>
</tr>
<tr>
<td>
<code><b>INT_MIN -32767</b></code>
</td>
<td>
Minimum value for an int.
</td>
</tr>
<tr>
<td>
<code><b>INT_MAX +32767</b></code>
</td>
<td>
Maximum value for an int.
</td>
</tr>
<tr>
<td>
<code><b>UINT_MAX 65535</b></code>
</td>
<td>
Maximum value for an unsigned int.
</td>
</tr>
<tr>
<td>
<code><b>LONG_MIN -2147483647</b></code>
</td>
<td>
Minimum value for a long int.
</td>
</tr>
<tr>
<td>
<code><b>LONG_MAX +2147483647</b></code>
</td>
<td>
Maximum value for a long int.
</td>
</tr>
<tr>
<td>
<code><b>ULONG_MAX 4294967295</b></code>
</td>
<td>
Maximum value for an unsigned long int.
</td>
</tr>
</table>
<hr>
<center>
<table border=0 width=100%>
<tr>
<td align=left width=20% valign=top>
<a href="2.4.html">
<img src="left.gif" border=0>
Previous Section<br>
2.4 float.h</a></td>
<td align=center width=60% valign=top>
| <a href="index.html">Table of Contents</a> |
<a href="index2.html">Index</a> |</td>
<td align=right width=20% valign=top>
<a href="2.6.html">
Next Section
<img src="right.gif" border=0><br>
2.6 locale.h</a></td>
</tr>
</table>
</center>
</body>
</html>