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Defined in header <math.h> | ||
#define islessequal(x, y) /* implementation defined */ | (since C99) | |
Determines if the floating-point numberx is less than or equal to the floating-point numbery, without setting floating-point exceptions.
Contents |
x | - | floating-point value |
y | - | floating-point value |
Nonzero integral value ifx<= y,0 otherwise.
The built-inoperator<= for floating-point numbers may raiseFE_INVALID if one or both of the arguments is NaN. This function is a "quiet" version ofoperator<=.
#include <math.h>#include <stdio.h> int main(void){printf("islessequal(2.0,1.0) = %d\n", islessequal(2.0,1.0));printf("islessequal(1.0,2.0) = %d\n", islessequal(1.0,2.0));printf("islessequal(1.0,1.0) = %d\n", islessequal(1.0,1.0));printf("islessequal(INFINITY,1.0) = %d\n", islessequal(INFINITY,1.0));printf("islessequal(1.0,NAN) = %d\n", islessequal(1.0, NAN)); return0;}
Possible output:
islessequal(2.0,1.0) = 0islessequal(1.0,2.0) = 1islessequal(1.0,1.0) = 1islessequal(INFINITY,1.0) = 0islessequal(1.0,NAN) = 0
(C99) | checks if the first floating-point argument is greater or equal than the second (function macro)[edit] |
C++ documentation forislessequal |