*Last updated: 2023-03-16.*
# tf_quant_finance.rates.analytics.swap.swap_price
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Computes prices of a batch of generic swaps.
```python
tf_quant_finance.rates.analytics.swap.swap_price(
pay_leg_cashflows, receive_leg_cashflows, pay_leg_discount_factors,
receive_leg_discount_factors, dtype=None, name=None
)
```
#### Example
```python
pay_leg_cashflows = [[100, 100, 100], [200, 250, 300]]
receive_leg_cashflows = [[200, 250, 300, 300], [100, 100, 100, 100]]
pay_leg_discount_factors = [[0.95, 0.9, 0.8],
[0.9, 0.85, 0.8]]
receive_leg_discount_factors = [[0.95, 0.9, 0.8, 0.75],
[0.9, 0.85, 0.8, 0.75]]
swap_price(pay_leg_cashflows=pay_leg_cashflows,
receive_leg_cashflows=receive_leg_cashflows,
pay_leg_discount_factors=pay_leg_discount_factors,
receive_leg_discount_factors=receive_leg_discount_factors,
dtype=tf.float64)
# Expected: [615.0, -302.5]
```
#### Args:
* `pay_leg_cashflows`: A real `Tensor` of shape
`batch_shape + [num_pay_cashflows]`, where `num_pay_cashflows` is the
number of cashflows for each batch element. Cashflows of the pay leg of
the swaps.
* `receive_leg_cashflows`: A `Tensor` of the same `dtype` as `pay_leg_cashflows`
and of shape `batch_shape + [num_receive_cashflows]` where
`num_pay_cashflows` is the number of cashflows for each batch element.
Cashflows of the receive leg of the swaps.
* `pay_leg_discount_factors`: A `Tensor` of the same `dtype` as
`pay_leg_cashflows` and of compatible shape. Discount factors for each
cashflow of the pay leg.
* `receive_leg_discount_factors`: A `Tensor` of the same `dtype` as
`receive_leg_cashflows` and of compatible shape. Discount factors for each
cashflow of the receive leg.
* `dtype`: `tf.Dtype`. If supplied the dtype for the input and output `Tensor`s.
Default value: None which maps to the default dtype inferred from
`pay_leg_cashflows`.
* `name`: Python str. The name to give to the ops created by this function.
Default value: None which maps to 'floating_coupons'.
#### Returns:
A `Tensor` of the same `dtype` as `coupon_rates` and of shape `batch_shape`.
Present values of swaps from receiver perspective.