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ISGREATER(3)		 BSD Library Functions Manual		  ISGREATER(3)

NAME
     isgreater,	isgreaterequal,	isless,	islessequal, islessgreater,
     isunordered -- compare two	floating-point numbers

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <math.h>

     int
     isgreater(real-floating x,	real-floating y);

     int
     isgreaterequal(real-floating x, real-floating y);

     int
     isless(real-floating x, real-floating y);

     int
     islessequal(real-floating x, real-floating	y);

     int
     islessgreater(real-floating x, real-floating y);

     int
     isunordered(real-floating x, real-floating	y);

DESCRIPTION
     Each of the macros	isgreater(), isgreaterequal(), isless(),
     islessequal(), and	islessgreater()	take arguments x and y and return a
     non-zero value if and only	if its nominal relation	on x and y is true.
     These macros always return	zero if	either argument	is not a number	(NaN),
     but unlike	the corresponding C operators, they never raise	a floating
     point exception.

     The isunordered() macro takes arguments x and y and returns non-zero if
     and only if neither x nor y are NaNs.  For	any pair of floating-point
     values, one of the	relationships (less, greater, equal, unordered)	holds.

SEE ALSO
     fpclassify(3), math(3), signbit(3)

STANDARDS
     The isgreater(), isgreaterequal(),	isless(), islessequal(),
     islessgreater(), and isunordered()	macros conform to ISO/IEC 9899:1999
     ("ISO C99").

HISTORY
     The relational macros described above first appeared in FreeBSD 5.1.

BSD			       February	12, 2003			   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS | HISTORY

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