| ISGREATER(3) | Library Functions Manual | ISGREATER(3) |
isgreater, isgreaterequal,
isless, islessequal,
islessgreater, isunordered
—
#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);
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.
isgreater(),
isgreaterequal(), isless(),
islessequal(),
islessgreater(), and
isunordered() macros conform to
ISO/IEC 9899:1999 (“ISO C99”).
| February 12, 2003 | NetBSD 9.1 |