isgreater
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Defined in header
<math.h>
#define isgreater(x, y) /* implementation defined */
(since C99)
Determines if the floating-point number x is greater than the floating-point number (y), without setting floating-point exceptions.
[edit] Parameters
x
-
floating-point value
y
-
floating-point value
[edit] Return value
Nonzero integral value if x > y, 0 otherwise.
[edit] Notes
The built-in operator> for floating-point numbers may set FE_INVALID if one or both of the arguments is NaN. This function is a "quiet" version of operator>.
[edit] Example
Run this code
#include <math.h> #include <stdio.h> int main(void) { printf ("isgreater(2.0,1.0) = %d\n", isgreater(2.0, 1.0)); printf ("isgreater(1.0,2.0) = %d\n", isgreater(1.0, 2.0)); printf ("isgreater(INFINITY,1.0) = %d\n", isgreater(INFINITY, 1.0)); printf ("isgreater(1.0,NAN) = %d\n", isgreater(1.0, NAN)); return 0; }
Possible output:
isgreater(2.0,1.0) = 1 isgreater(1.0,2.0) = 0 isgreater(INFINITY,1.0) = 1 isgreater(1.0,NAN) = 0
[edit] References
- C23 standard (ISO/IEC 9899:2024):
- 7.12.14.1 The isgreater macro (p: TBD)
- F.10.11 Comparison macros (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.12.14.1 The isgreater macro (p: 189)
- F.10.11 Comparison macros (p: 386-387)
- C11 standard (ISO/IEC 9899:2011):
- 7.12.14.1 The isgreater macro (p: 259)
- F.10.11 Comparison macros (p: 531)
- C99 standard (ISO/IEC 9899:1999):
- 7.12.14.1 The isgreater macro (p: 240)
[edit] See also
C++ documentation for isgreater