isless(3) [freebsd man page]

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

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