4.1. Half Arithmetic Constants

To use these constants, include the header file cuda_fp16.h in your program.

Macros

CUDART_INF_FP16

Defines floating-point positive infinity value for the half data type.

CUDART_MAX_NORMAL_FP16

Defines a maximum representable value for the half data type.

CUDART_MIN_DENORM_FP16

Defines a minimum representable (denormalized) value for the half data type.

CUDART_NAN_FP16

Defines canonical NaN value for the half data type.

CUDART_NEG_ZERO_FP16

Defines a negative zero value for the half data type.

CUDART_ONE_FP16

Defines a value of 1.0 for the half data type.

CUDART_ZERO_FP16

Defines a positive zero value for the half data type.

4.1.1. Macros

CUDART_INF_FP16 __ushort_as_half((unsigned short)0x7C00U)

Defines floating-point positive infinity value for the half data type.

CUDART_MAX_NORMAL_FP16 __ushort_as_half((unsigned short)0x7BFFU)

Defines a maximum representable value for the half data type.

CUDART_MIN_DENORM_FP16 __ushort_as_half((unsigned short)0x0001U)

Defines a minimum representable (denormalized) value for the half data type.

CUDART_NAN_FP16 __ushort_as_half((unsigned short)0x7FFFU)

Defines canonical NaN value for the half data type.

CUDART_NEG_ZERO_FP16 __ushort_as_half((unsigned short)0x8000U)

Defines a negative zero value for the half data type.

CUDART_ONE_FP16 __ushort_as_half((unsigned short)0x3C00U)

Defines a value of 1.0 for the half data type.

CUDART_ZERO_FP16 __ushort_as_half((unsigned short)0x0000U)

Defines a positive zero value for the half data type.