Skip to main content

ClikaRT::dtype::float8_e4m3fn_t

struct

Header: ClikaRT/compute/scalar_types.h

FP8 E4M3 (FN: finite, NaN-only): 1 sign + 4 exponent + 3 mantissa, bias 7. Range ±448, smallest normal 2^-6, eps 2^-3. NaN at exp+mantissa all-ones; no infinity. Conversion from fp32 saturates on overflow. 8-bit storage.

Static member functions​

from_bits()​

static constexpr float8_e4m3fn_t from_bits(std::uint8_t b) noexcept

Reinterpret a raw 8-bit encoding without converting.

Declared in ClikaRT/compute/scalar_types.h, line 140

Member functions​

float8_e4m3fn_t()​

constexpr constexpr float8_e4m3fn_t() noexcept=default

Declared in ClikaRT/compute/scalar_types.h, line 131

float8_e4m3fn_t(float)​

explicit float8_e4m3fn_t(float f) noexcept

Convert from fp32 (round-to-nearest-even; saturates on overflow).

Declared in ClikaRT/compute/scalar_types.h, line 134

operator float()​

operator float() const noexcept

Convert to fp32 (lossless).

Declared in ClikaRT/compute/scalar_types.h, line 137

is_nan()​

constexpr bool is_nan() const noexcept

True at the format's NaN (exponent+mantissa all-ones; either sign).

Declared in ClikaRT/compute/scalar_types.h, line 142

Data members​

bits​

std::uint8_t bits = 0

Raw 8-bit encoding (the storage/ABI form).

Declared in ClikaRT/compute/scalar_types.h, line 129

Friends​

operator==​

friend bool operator==(float8_e4m3fn_t a, float8_e4m3fn_t b) noexcept

Compares a and b by dequantized value (IEEE rules; a NaN operand compares false).

Declared in ClikaRT/compute/scalar_types.h, line 144

operator!=​

friend bool operator!=(float8_e4m3fn_t a, float8_e4m3fn_t b) noexcept

Compares a and b by dequantized value (IEEE rules; a NaN operand compares false).

Declared in ClikaRT/compute/scalar_types.h, line 145

operator<​

friend bool operator<(float8_e4m3fn_t a, float8_e4m3fn_t b) noexcept

Compares a and b by dequantized value (IEEE rules; a NaN operand compares false).

Declared in ClikaRT/compute/scalar_types.h, line 146

operator<=​

friend bool operator<=(float8_e4m3fn_t a, float8_e4m3fn_t b) noexcept

Compares a and b by dequantized value (IEEE rules; a NaN operand compares false).

Declared in ClikaRT/compute/scalar_types.h, line 147

operator>​

friend bool operator>(float8_e4m3fn_t a, float8_e4m3fn_t b) noexcept

Compares a and b by dequantized value (IEEE rules; a NaN operand compares false).

Declared in ClikaRT/compute/scalar_types.h, line 148

operator>=​

friend bool operator>=(float8_e4m3fn_t a, float8_e4m3fn_t b) noexcept

Compares a and b by dequantized value (IEEE rules; a NaN operand compares false).

Declared in ClikaRT/compute/scalar_types.h, line 149