cubecl-core 0.4.0

use crate::{
    flex32,
    ir::{Elem, FloatKind, IntKind, UIntKind},
};

/// The base element trait for the jit backend.
pub trait CubeElement: core::fmt::Debug + Send + Sync + 'static + Clone + bytemuck::Pod {
    /// Returns the name of the type.
    fn type_name() -> &'static str;
    /// Convert a slice of elements to a slice of bytes.
    fn as_bytes(slice: &[Self]) -> &[u8];
    /// Convert a slice of bytes to a slice of elements.
    fn from_bytes(bytes: &[u8]) -> &[Self];
    /// Element representation for `cubecl`.
    fn cube_elem() -> Elem;
    /// Highest possible value
    fn maximum_value() -> Self;
    /// Lowest possible value
    fn minimum_value() -> Self;
}

impl CubeElement for u64 {
    fn type_name() -> &'static str {
        "u64"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::UInt(UIntKind::U64)
    }
    fn maximum_value() -> Self {
        u64::MAX
    }
    fn minimum_value() -> Self {
        u64::MIN
    }
}

impl CubeElement for u32 {
    fn type_name() -> &'static str {
        "u32"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::UInt(UIntKind::U32)
    }
    fn maximum_value() -> Self {
        u32::MAX
    }
    fn minimum_value() -> Self {
        u32::MIN
    }
}

impl CubeElement for u16 {
    fn type_name() -> &'static str {
        "u16"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::UInt(UIntKind::U16)
    }
    fn maximum_value() -> Self {
        u16::MAX
    }
    fn minimum_value() -> Self {
        u16::MIN
    }
}

impl CubeElement for u8 {
    fn type_name() -> &'static str {
        "u8"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::UInt(UIntKind::U8)
    }
    fn maximum_value() -> Self {
        u8::MAX
    }
    fn minimum_value() -> Self {
        u8::MIN
    }
}

impl CubeElement for i64 {
    fn type_name() -> &'static str {
        "i64"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Int(IntKind::I64)
    }
    fn maximum_value() -> Self {
        // Seems to cause problem for some GPU
        i64::MAX - 1
    }
    fn minimum_value() -> Self {
        // Seems to cause problem for some GPU
        i64::MIN + 1
    }
}

impl CubeElement for i32 {
    fn type_name() -> &'static str {
        "i32"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Int(IntKind::I32)
    }
    fn maximum_value() -> Self {
        // Seems to cause problem for some GPU
        i32::MAX - 1
    }
    fn minimum_value() -> Self {
        // Seems to cause problem for some GPU
        i32::MIN + 1
    }
}

impl CubeElement for i16 {
    fn type_name() -> &'static str {
        "i16"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Int(IntKind::I16)
    }
    fn maximum_value() -> Self {
        // Seems to cause problem for some GPU
        i16::MAX - 1
    }
    fn minimum_value() -> Self {
        // Seems to cause problem for some GPU
        i16::MIN + 1
    }
}

impl CubeElement for i8 {
    fn type_name() -> &'static str {
        "i8"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Int(IntKind::I8)
    }
    fn maximum_value() -> Self {
        // Seems to cause problem for some GPU
        i8::MAX - 1
    }
    fn minimum_value() -> Self {
        // Seems to cause problem for some GPU
        i8::MIN + 1
    }
}

impl CubeElement for f64 {
    fn type_name() -> &'static str {
        "f64"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Float(FloatKind::F64)
    }
    fn maximum_value() -> Self {
        f64::MAX
    }
    fn minimum_value() -> Self {
        f64::MIN
    }
}

impl CubeElement for f32 {
    fn type_name() -> &'static str {
        "f32"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Float(FloatKind::F32)
    }
    fn maximum_value() -> Self {
        f32::MAX
    }
    fn minimum_value() -> Self {
        f32::MIN
    }
}

impl CubeElement for half::f16 {
    fn type_name() -> &'static str {
        "f16"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Float(FloatKind::F16)
    }
    fn maximum_value() -> Self {
        half::f16::MAX
    }
    fn minimum_value() -> Self {
        half::f16::MIN
    }
}

impl CubeElement for half::bf16 {
    fn type_name() -> &'static str {
        "bf16"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Float(FloatKind::BF16)
    }
    fn maximum_value() -> Self {
        half::bf16::MAX
    }
    fn minimum_value() -> Self {
        half::bf16::MIN
    }
}

impl CubeElement for flex32 {
    fn type_name() -> &'static str {
        "flex32"
    }
    fn as_bytes(slice: &[Self]) -> &[u8] {
        bytemuck::cast_slice(slice)
    }
    fn from_bytes(bytes: &[u8]) -> &[Self] {
        bytemuck::cast_slice(bytes)
    }
    fn cube_elem() -> Elem {
        Elem::Float(FloatKind::Flex32)
    }
    fn maximum_value() -> Self {
        <flex32 as num_traits::Float>::max_value()
    }
    fn minimum_value() -> Self {
        <flex32 as num_traits::Float>::min_value()
    }
}