sglang_v0.5.2/sglang/sgl-kernel/csrc/gemm/gptq/qdq_8.cuh

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/*
Copied from https://github.com/turboderp/exllamav2
*/
#ifndef _qdq_8_cuh
#define _qdq_8_cuh
#include "qdq_util.cuh"
namespace sglang {
namespace gptq {
__forceinline__ __device__ void shuffle_8bit_4(uint32_t* q, int stride) {}
__forceinline__ __device__ void
dequant_8bit_8(const uint32_t q_0, const uint32_t q_1, half2 (&dq)[4], int stride, const uint32_t zero) {
half dqh[8];
for (int i = 0; i < 4; i++)
dqh[i] = dq_ns(exb(q_0, i * 8, 0xff), zero);
for (int i = 0; i < 4; i++)
dqh[i + 4] = dq_ns(exb(q_1, i * 8, 0xff), zero);
for (int i = 0; i < 4; i++)
dq[i] = __halves2half2(dqh[i * 2], dqh[i * 2 + 1]);
}
} // namespace gptq
} // namespace sglang
#endif