Review: add type traits and make function more generic

Author: am17an

ggml/src/ggml-cuda/convert.cu

@@ -739,3 +739,14 @@ to_bf16_nc_cuda_t ggml_get_to_bf16_nc_cuda(ggml_type type) {
             return nullptr;
     }
 }
+
+to_fp32_nc_cuda_t ggml_get_to_fp32_nc_cuda(ggml_type type) {
+    switch (type) {
+        case GGML_TYPE_F16:
+            return convert_unary_cuda<half, float>;
+        case GGML_TYPE_BF16:
+            return convert_unary_cuda<nv_bfloat16, float>;
+        default:
+            return nullptr;
+    }
+}

ggml/src/ggml-cuda/convert.cuh

@@ -22,7 +22,10 @@ using to_t_nc_cuda_t = void (*)(const void * x, T * y,
     int64_t ne00, int64_t ne01, int64_t ne02, int64_t ne03,
     int64_t s01, int64_t s02, int64_t s03, cudaStream_t stream);
 
+typedef to_t_nc_cuda_t<float> to_fp32_nc_cuda_t;
 typedef to_t_nc_cuda_t<half> to_fp16_nc_cuda_t;
 typedef to_t_nc_cuda_t<nv_bfloat16> to_bf16_nc_cuda_t;
+
+to_fp32_nc_cuda_t ggml_get_to_fp32_nc_cuda(ggml_type type);
 to_fp16_nc_cuda_t ggml_get_to_fp16_nc_cuda(ggml_type type);
 to_bf16_nc_cuda_t ggml_get_to_bf16_nc_cuda(ggml_type type);