import torch
import torch.nn as nn
import torch.nn.functional as F


class IoULoss(nn.Module):
    """
    The IoU metric, or Jaccard Index, is similar to the Dice metric and is calculated as the ratio between the overlap 
    of the positive instances between two sets, and their mutual combined values
    """

    def __init__(self, weight=None, size_average=True):
        super(IoULoss, self).__init__()

    def forward(self, inputs, targets, smooth=1):
        inputs = F.sigmoid(inputs)
        inputs = inputs.view(-1)
        targets = targets.view(-1)
        intersection = (inputs * targets).sum()
        total = (inputs + targets).sum()
        union = total - intersection
        IoU = (intersection + smooth) / (union + smooth)
        return 1 - IoU


def get_inputs():
    return [torch.rand([4, 4, 4, 4]), torch.rand([4, 4, 4, 4])]


def get_init_inputs():
    return [[], {}]

import torch
import triton
import triton.language as tl
from torch._inductor.runtime.triton_heuristics import grid
from torch._C import _cuda_getCurrentRawStream as get_raw_stream
from torch._inductor.runtime import triton_helpers
import torch.nn as nn
assert_size_stride = torch._C._dynamo.guards.assert_size_stride
empty_strided_cuda = torch._C._dynamo.guards._empty_strided_cuda


@triton.jit
def triton_per_fused_add_div_mul_rsub_sub_sum_0(in_out_ptr0, in_ptr0,
    in_ptr1, xnumel, rnumel):
    XBLOCK: tl.constexpr = 1
    RBLOCK: tl.constexpr = 256
    xoffset = tl.program_id(0) * XBLOCK
    tl.full([1], xoffset, tl.int32)
    tl.full([RBLOCK], True, tl.int1)
    rindex = tl.arange(0, RBLOCK)[:]
    tl.full([RBLOCK], True, tl.int1)
    r0 = rindex
    tmp0 = tl.load(in_ptr0 + r0, None)
    tmp2 = tl.load(in_ptr1 + r0, None)
    tmp1 = tl.sigmoid(tmp0)
    tmp3 = tmp1 * tmp2
    tmp4 = tl.broadcast_to(tmp3, [RBLOCK])
    tmp6 = triton_helpers.promote_to_tensor(tl.sum(tmp4, 0))
    tmp7 = tmp1 + tmp2
    tmp8 = tl.broadcast_to(tmp7, [RBLOCK])
    tmp10 = triton_helpers.promote_to_tensor(tl.sum(tmp8, 0))
    tmp11 = 1.0
    tmp12 = tmp6 + tmp11
    tmp13 = tmp10 - tmp6
    tmp14 = tmp13 + tmp11
    tmp15 = tmp12 / tmp14
    tmp16 = tmp11 - tmp15
    tl.debug_barrier()
    tl.store(in_out_ptr0 + tl.full([1], 0, tl.int32), tmp16, None)


def call(args):
    arg0_1, arg1_1 = args
    args.clear()
    assert_size_stride(arg0_1, (4, 4, 4, 4), (64, 16, 4, 1))
    assert_size_stride(arg1_1, (4, 4, 4, 4), (64, 16, 4, 1))
    with torch.cuda._DeviceGuard(0):
        torch.cuda.set_device(0)
        buf0 = empty_strided_cuda((), (), torch.float32)
        buf2 = buf0
        del buf0
        get_raw_stream(0)
        triton_per_fused_add_div_mul_rsub_sub_sum_0[grid(1)](buf2, arg0_1,
            arg1_1, 1, 256, num_warps=2, num_stages=1)
        del arg0_1
        del arg1_1
    return buf2,


class IoULossNew(nn.Module):
    """
    The IoU metric, or Jaccard Index, is similar to the Dice metric and is calculated as the ratio between the overlap 
    of the positive instances between two sets, and their mutual combined values
    """

    def __init__(self, weight=None, size_average=True):
        super(IoULossNew, self).__init__()

    def forward(self, input_0, input_1):
        arg0_1 = input_0
        arg1_1 = input_1
        output = call([arg0_1, arg1_1])
        return output[0]
