Constant MAX_P2SH_SIGOPS 

pub const MAX_P2SH_SIGOPS: u32 = 15;

The maximum number of signature operations in the redeem script of a standard P2SH input.

This is zcashd’s MAX_P2SH_SIGOPS standardness (policy) constant: https://github.com/zcash/zcash/blob/v6.11.0/src/policy/policy.h#L20