©
This document usesPHP Chinese website manualRelease
Defined in header |
|
|
---|---|---|
#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.
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#include 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)); return 0;}
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
C11 standard (ISO/IEC 9899:2011):
7.12.14.4 The islessequal macro (p: 260)
F.10.11 Comparison macros (p: 531)
C99 standard (ISO/IEC 9899:1999):
7.12.14.4 The islessequal macro (p: 241)
isgreaterequal (C99) |
checks if the first floating-point argument is greater or equal than the second (function) |
---|
| C++ documentation for islessequal |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.