exp package:cabal-install-solver

Like assert, but only enabled with -fdebug-expensive-assertions. This function can be used for expensive assertions that should only be turned on during testing or debugging.
exponent corresponds to the second component of decodeFloat. exponent 0 = 0 and for finite nonzero x, exponent x = snd (decodeFloat x) + floatDigits x. If x is a finite floating-point number, it is equal in value to significand x * b ^^ exponent x, where b is the floating-point radix. The behaviour is unspecified on infinite or NaN values.
A component that can be depended upon by another package, i.e., a library or an executable.
Interface. Takes as an argument a limit on allowed backjumps. If the limit is Nothing, then infinitely many backjumps are allowed. If the limit is 'Just 0', backtracking is completely disabled.