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import pytest

import triton
import triton.language as tl
import triton.language.extra.cann.libdevice as libdevice
import test_common

import torch
import torch_npu

@triton.jit
def triton_cosh(in_ptr0, out_ptr0, XBLOCK : tl.constexpr, XBLOCK_SUB : tl.constexpr):
    offset = tl.program_id(0) * XBLOCK
    base1 = tl.arange(0, XBLOCK_SUB)
    loops1: tl.constexpr = XBLOCK // XBLOCK_SUB
    for loop1 in range(loops1):
        x0 = offset + (loop1 * XBLOCK_SUB) + base1
        tmp0 = tl.load(in_ptr0 + (x0), None)
        tmp1 = libdevice.cosh(tmp0)
        tl.store(out_ptr0 + (x0), tmp1, None)


@pytest.mark.parametrize('param_list',
                            [
                                'float32',
                                'float16',
                                'bfloat16'
                            ])
def test_cosh_special(param_list):
    dtype = param_list
    x_near_zero = torch.linspace(-1.0, 1.0, 256, dtype=eval("torch."+dtype)).npu()
    x_medium_neg = torch.linspace(-10.0, -1.0, 128, dtype=eval("torch."+dtype)).npu()
    x_medium_pos = torch.linspace(1.0, 10.0, 128, dtype=eval("torch."+dtype)).npu()

    x_large_neg = torch.linspace(-1e4, -10.0, 64, dtype=eval("torch."+dtype)).npu()
    x_large_pos = torch.linspace(10.0, 1e4, 64, dtype=eval("torch."+dtype)).npu()

    x0 = torch.cat([x_near_zero, x_medium_neg, x_medium_pos, x_large_neg, x_large_pos], dim=0)
    
    y_ref = torch.cosh(x0)
    y_cal = torch.zeros_like(y_ref)
    triton_cosh[1, 1, 1](x0, y_cal, x0.shape[0], x0.shape[0])
    test_common.validate_cmp(dtype, y_cal, y_ref)