1#pragma once
 2#include "common.cuh"
 3
 4#define CUDA_DEQUANTIZE_BLOCK_SIZE 256
 5
 6template<typename T>
 7using to_t_cuda_t = void (*)(const void * x, T * y, int64_t k, cudaStream_t stream);
 8
 9typedef to_t_cuda_t<float> to_fp32_cuda_t;
10typedef to_t_cuda_t<half> to_fp16_cuda_t;
11typedef to_t_cuda_t<nv_bfloat16> to_bf16_cuda_t;
12
13to_fp16_cuda_t ggml_get_to_fp16_cuda(ggml_type type);
14
15to_bf16_cuda_t ggml_get_to_bf16_cuda(ggml_type type);
16
17to_fp32_cuda_t ggml_get_to_fp32_cuda(ggml_type type);
18
19// TODO more general support for non-contiguous inputs
20
21template<typename T>
22using to_t_nc_cuda_t = void (*)(const void * x, T * y,
23    int64_t ne00, int64_t ne01, int64_t ne02, int64_t ne03,
24    int64_t s01, int64_t s02, int64_t s03, cudaStream_t stream);
25
26typedef to_t_nc_cuda_t<float> to_fp32_nc_cuda_t;
27typedef to_t_nc_cuda_t<half> to_fp16_nc_cuda_t;
28typedef to_t_nc_cuda_t<nv_bfloat16> to_bf16_nc_cuda_t;
29
30to_fp32_nc_cuda_t ggml_get_to_fp32_nc_cuda(ggml_type type);
31to_fp16_nc_cuda_t ggml_get_to_fp16_nc_cuda(ggml_type type);
32to_bf16_nc_cuda_t ggml_get_to_bf16_nc_cuda(ggml_type type);
33
34template<typename dst_t, typename src_t>
35 __host__ __device__ inline dst_t ggml_cuda_cast(src_t x) {
36    if constexpr (std::is_same_v<dst_t, src_t>) {
37        return x;
38    } else if constexpr(std::is_same_v<dst_t, nv_bfloat16>) {
39        return __float2bfloat16(float(x));
40    } else if constexpr(std::is_same_v<src_t, nv_bfloat16>) {
41        return __bfloat162float(x);
42    } else if constexpr(std::is_same_v<src_t, float2> && std::is_same_v<dst_t, half2>) {
43        return __float22half2_rn(x);
44    } else if constexpr(std::is_same_v<src_t, float2> && std::is_same_v<dst_t, nv_bfloat162>) {
45        // bypass compile error on cuda 12.0.1
46#ifdef GGML_USE_HIP
47        return __float22bfloat162_rn(x);
48#else
49        return {x.x, x.y};
50#endif // GGML_USE_HIP
51    } else if constexpr(std::is_same_v<dst_t, int32_t>) {
52        return int32_t(x);
53    } else {
54        return float(x);
55    }
56}