half.h File Reference

definition of half (float16) type. More...

#include "./base.h"
#include <x86intrin.h>

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Namespaces
	mshadow
	overloaded + operator between half_t and bf16_t
	mshadow::half

Macros
#define	MSHADOW_CUDA_HALF   0
#define	MSHADOW_HALF_OPERATOR(RTYPE, OP)
#define	MSHADOW_HALF_ASSIGNOP(AOP, OP)
#define	MSHADOW_HALF_CONVERSIONOP(T)
#define	MSHADOW_HALF_MIN   mshadow::half::half_t::Binary(0xFBFF);
	overloaded + operator for half_t More...
#define	MSHADOW_HALF_MAX   mshadow::half::half_t::Binary(0x7BFF);
#define	MSHADOW_HALF_SIGN_BIT   0x8000
#define	MSHADOW_HALF_EXPONENT_BITS   0x7c00

Functions
class	mshadow::half::MSHADOW_ALIGNED (2) half_t

Detailed Description

definition of half (float16) type.

Copyright (c) 2015 by Contributors

Author

Junyuan Xie

Macro Definition Documentation

#define MSHADOW_CUDA_HALF   0

#define MSHADOW_HALF_ASSIGNOP	(		AOP,
			OP
	)

Value:

template<typename T>                                                    \
  MSHADOW_XINLINE half_t operator AOP (const T& a) {                      \
    return *this = half_t(float(*this) OP float(a));  /* NOLINT(*)*/      \
  }                                                                       \
  template<typename T>                                                    \
  MSHADOW_XINLINE half_t operator AOP (const volatile T& a) volatile {    \
    return *this = half_t(float(*this) OP float(a));  /* NOLINT(*)*/      \
  }

#define MSHADOW_HALF_CONVERSIONOP

(

T

)

Value:

MSHADOW_XINLINE operator T() const {                                    \
    return T(_cvtsh_ss(half_));   /* NOLINT(*)*/                          \
  }                                                                       \
  MSHADOW_XINLINE operator T() const volatile {                           \
    return T(_cvtsh_ss(half_));   /* NOLINT(*)*/                          \
  }

#define MSHADOW_HALF_EXPONENT_BITS   0x7c00

#define MSHADOW_HALF_MAX   mshadow::half::half_t::Binary(0x7BFF);

#define MSHADOW_HALF_MIN   mshadow::half::half_t::Binary(0xFBFF);

overloaded + operator for half_t

overloaded - operator for half_t

overloaded * operator for half_t

overloaded / operator for half_t

overloaded > operator for half_t

overloaded < operator for half_t

overloaded >= operator for half_t

overloaded <= operator for half_t

#define MSHADOW_HALF_OPERATOR	(		RTYPE,
			OP
	)

Value:

MSHADOW_XINLINE RTYPE operator OP (half_t a, half_t b) {                \
    return RTYPE(float(a) OP float(b));  /* NOLINT(*) */                  \
  }                                                                       \
  template<typename T>                                                    \
  MSHADOW_XINLINE RTYPE operator OP (half_t a, T b) {                     \
    return RTYPE(float(a) OP float(b));  /* NOLINT(*) */                  \
  }                                                                       \
  template<typename T>                                                    \
  MSHADOW_XINLINE RTYPE operator OP (T a, half_t b) {                     \
    return RTYPE(float(a) OP float(b));  /* NOLINT(*) */                  \
  }

#define MSHADOW_HALF_SIGN_BIT   0x8000