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mbs_sf_psasmbs_sf_psas (routine)
Mortgage backed security - calculate the survival factor using % PSA array
Introduced in release: 1.2
Component: US MBS
Purpose:
Calculate the monthly survival factors and the change in survival factor using an array of projected Public Securities Association Rates
Alternatives:
This routine uses an array (list) of projected prepayment rates. For the same calculation from a single prepayment rate use mbs_sf_psa.
Results:
The following values for each month are calculated and returned in arrays, with the first element of the array containing the value for the first month:
surv_fctr : Survival factor array
delta_surv_fctrs: Change in survival factor from last month array
All results are accurate to as many places as supported by a double precision value.
Error Conditions:
Returned values should be ignored for a non-zero status. See Errors.
| Last Mod Date: 12/20/1995 | © 2001 TIPS, Inc. | Doc Version: 5.0 |