1.1.3. Half Comparison Functions
[Half Precision Intrinsics]
To use these functions include the header file cuda_fp16.h in your program.
Functions
- __device__ bool __heq ( const __half a, const __half b ) throw ( )
- Performs half if-equal comparison.
- __device__ bool __hequ ( const __half a, const __half b ) throw ( )
- Performs half unordered if-equal comparison.
- __device__ bool __hge ( const __half a, const __half b ) throw ( )
- Performs half greater-equal comparison.
- __device__ bool __hgeu ( const __half a, const __half b ) throw ( )
- Performs half unordered greater-equal comparison.
- __device__ bool __hgt ( const __half a, const __half b ) throw ( )
- Performs half greater-than comparison.
- __device__ bool __hgtu ( const __half a, const __half b ) throw ( )
- Performs half unordered greater-than comparison.
- __device__ int __hisinf ( const __half a ) throw ( )
- Checks if the input half number is infinite.
- __device__ bool __hisnan ( const __half a ) throw ( )
- Determine whether half argument is a NaN.
- __device__ bool __hle ( const __half a, const __half b ) throw ( )
- Performs half less-equal comparison.
- __device__ bool __hleu ( const __half a, const __half b ) throw ( )
- Performs half unordered less-equal comparison.
- __device__ bool __hlt ( const __half a, const __half b ) throw ( )
- Performs half less-than comparison.
- __device__ bool __hltu ( const __half a, const __half b ) throw ( )
- Performs half unordered less-than comparison.
- __device__ bool __hne ( const __half a, const __half b ) throw ( )
- Performs half not-equal comparison.
- __device__ bool __hneu ( const __half a, const __half b ) throw ( )
- Performs half unordered not-equal comparison.
Functions
- __device__ bool __heq ( const __half a, const __half b ) throw ( )
-
Performs half if-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of if-equal comparison of a and b.
Description
Performs half if-equal comparison of inputs a and b. NaN inputs generate false results.
- __device__ bool __hequ ( const __half a, const __half b ) throw ( )
-
Performs half unordered if-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of unordered if-equal comparison of a and b.
Description
Performs half if-equal comparison of inputs a and b. NaN inputs generate true results.
- __device__ bool __hge ( const __half a, const __half b ) throw ( )
-
Performs half greater-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of greater-equal comparison of a and b.
Description
Performs half greater-equal comparison of inputs a and b. NaN inputs generate false results.
- __device__ bool __hgeu ( const __half a, const __half b ) throw ( )
-
Performs half unordered greater-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of unordered greater-equal comparison of a and b.
Description
Performs half greater-equal comparison of inputs a and b. NaN inputs generate true results.
- __device__ bool __hgt ( const __half a, const __half b ) throw ( )
-
Performs half greater-than comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of greater-than comparison of a and b.
Description
Performs half greater-than comparison of inputs a and b. NaN inputs generate false results.
- __device__ bool __hgtu ( const __half a, const __half b ) throw ( )
-
Performs half unordered greater-than comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of unordered greater-than comparison of a and b.
Description
Performs half greater-than comparison of inputs a and b. NaN inputs generate true results.
- __device__ int __hisinf ( const __half a ) throw ( )
-
Checks if the input half number is infinite.
Parameters
- a
- - half. Is only being read.
Returns
int
- -1
iff a is equal to negative infinity,
- 1
iff a is equal to positive infinity,
- 0
otherwise.
Description
Checks if the input half number a is infinite.
- __device__ bool __hisnan ( const __half a ) throw ( )
-
Determine whether half argument is a NaN.
Parameters
- a
- - half. Is only being read.
Returns
bool
- true
iff argument is NaN.
Description
Determine whether half value a is a NaN.
- __device__ bool __hle ( const __half a, const __half b ) throw ( )
-
Performs half less-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of less-equal comparison of a and b.
Description
Performs half less-equal comparison of inputs a and b. NaN inputs generate false results.
- __device__ bool __hleu ( const __half a, const __half b ) throw ( )
-
Performs half unordered less-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of unordered less-equal comparison of a and b.
Description
Performs half less-equal comparison of inputs a and b. NaN inputs generate true results.
- __device__ bool __hlt ( const __half a, const __half b ) throw ( )
-
Performs half less-than comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of less-than comparison of a and b.
Description
Performs half less-than comparison of inputs a and b. NaN inputs generate false results.
- __device__ bool __hltu ( const __half a, const __half b ) throw ( )
-
Performs half unordered less-than comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of unordered less-than comparison of a and b.
Description
Performs half less-than comparison of inputs a and b. NaN inputs generate true results.
- __device__ bool __hne ( const __half a, const __half b ) throw ( )
-
Performs half not-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of not-equal comparison of a and b.
Description
Performs half not-equal comparison of inputs a and b. NaN inputs generate false results.
- __device__ bool __hneu ( const __half a, const __half b ) throw ( )
-
Performs half unordered not-equal comparison.
Parameters
- a
- - half. Is only being read.
- b
- - half. Is only being read.
Returns
bool
- The
boolean result of unordered not-equal comparison of a and b.
Description
Performs half not-equal comparison of inputs a and b. NaN inputs generate true results.