netbsd man page for typeof

Query: typeof

OS: netbsd

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

TYPEOF(3)						   BSD Library Functions Manual 						 TYPEOF(3)

NAME
typeof -- GNU extension for type of an expression
SYNOPSIS
type typeof(expression);
DESCRIPTION
The typeof() construct can be used to obtain the type of an expression. The syntax is comparable to that of sizeof(), but semantically typeof() operates like a type name defined with typedef.
EXAMPLES
The following is a typical example of a type-generic macro: #define MAX(a, b) ({ typeof(a) _a = (a); typeof(b) _b = (b); _a > _b ? _a : _b; })
SEE ALSO
gcc(1), __alignof__(3), attribute(3), offsetof(3)
CAVEATS
The typeof() construct is a non-standard, compiler-specific extension.
BSD
December 19, 2010 BSD
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