---
title: "ClikaRT::dtype::float8_e4m3fnuz_t"
sidebar_label: "float8_e4m3fnuz_t"
description: "FP8 E4M3 FNUZ: 1 sign + 4 exponent + 3 mantissa, bias 8 (rebased). FNUZ = finite, NaN, unsigned-zero: one NaN at 0x80, no infinity, no -0. Range ±240, smallest normal 2^-7, eps 2^-3. 8-bit storage."
---

<!-- Generated by tools/doxygen2mdx from Doxygen XML. Do not edit. -->

<span class="api-kind api-kind--struct">struct</span>

**Header:** `ClikaRT/compute/scalar_types.h`

FP8 E4M3 FNUZ: 1 sign + 4 exponent + 3 mantissa, bias 8 (rebased). FNUZ = finite, NaN, unsigned-zero: one NaN at 0x80, no infinity, no -0. Range ±240, smallest normal 2^-7, eps 2^-3. 8-bit storage.

## Static member functions

### from\_bits() {#from_bits}

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`static` `constexpr` [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) **`from_bits`**(`std::uint8_t` `b`) `noexcept`

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Reinterpret a raw 8-bit encoding without converting.

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Declared in `ClikaRT/compute/scalar_types.h`, line 194

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## Member functions

### float8\_e4m3fnuz\_t() {#float8_e4m3fnuz_t}

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`constexpr` `constexpr` **`float8_e4m3fnuz_t`**() `noexcept=default`

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Declared in `ClikaRT/compute/scalar_types.h`, line 185

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### float8\_e4m3fnuz\_t(float) {#float8_e4m3fnuz_t-2}

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`explicit` **`float8_e4m3fnuz_t`**(`float` `f`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 188

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### operator float() {#operator-float}

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**`operator float`**() `const noexcept`

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Convert to fp32 (lossless).

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Declared in `ClikaRT/compute/scalar_types.h`, line 191

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### is\_nan() {#is_nan}

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`constexpr` `bool` **`is_nan`**() `const noexcept`

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True at the format's single NaN (0x80).

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Declared in `ClikaRT/compute/scalar_types.h`, line 196

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## Data members

### bits {#bits}

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`std::uint8_t` **`bits`** `= 0`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 183

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## Friends

### operator== {#operator-eq}

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`friend` `bool` **`operator==`**([`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `a`, [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `b`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 198

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### operator\!= {#operator-ne}

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`friend` `bool` **`operator!=`**([`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `a`, [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `b`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 199

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### operator\< {#operator-lt}

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`friend` `bool` **`operator<`**([`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `a`, [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `b`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 200

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### operator\<= {#operator-le}

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`friend` `bool` **`operator<=`**([`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `a`, [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `b`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 201

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### operator\> {#operator-gt}

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`friend` `bool` **`operator>`**([`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `a`, [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `b`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 202

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### operator\>= {#operator-ge}

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`friend` `bool` **`operator>=`**([`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `a`, [`float8_e4m3fnuz_t`](./float8_e4m3fnuz_t.md) `b`) `noexcept`

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

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Declared in `ClikaRT/compute/scalar_types.h`, line 203

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