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Add power operator to C and Python RCF APIs

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2013-01-10 13:05:47 -08:00
parent 191e503418
commit 4cd2998743
3 changed files with 24 additions and 0 deletions
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11
src/api/api_rcf.cpp
View file

@ -203,6 +203,17 @@ extern "C" {
Z3_CATCH_RETURN(0);
}
Z3_rcf_num Z3_API Z3_rcf_power(Z3_context c, Z3_rcf_num a, unsigned k) {
Z3_TRY;
LOG_Z3_rcf_power(c, a, k);
RESET_ERROR_CODE();
reset_rcf_cancel(c);
rcnumeral r;
rcfm(c).power(to_rcnumeral(a), k, r);
RETURN_Z3(from_rcnumeral(r));
Z3_CATCH_RETURN(0);
}
Z3_bool Z3_API Z3_rcf_lt(Z3_context c, Z3_rcf_num a, Z3_rcf_num b) {
Z3_TRY;
LOG_Z3_rcf_lt(c, a, b);

6
src/api/python/z3rcf.py
View file

@ -102,6 +102,12 @@ class RCFNum:
def __neg__(self):
return self.__rsub__(0)
def power(self, k):
return RCFNum(Z3_rcf_power(self.ctx_ref(), self.num, k), self.ctx)
def __pow__(self, k):
return self.power(k)
def decimal(self, prec=5):
return Z3_rcf_num_to_decimal_string(self.ctx_ref(), self.num, prec)

7
src/api/z3_rcf.h
View file

@ -121,6 +121,13 @@ extern "C" {
*/
Z3_rcf_num Z3_API Z3_rcf_inv(__in Z3_context c, __in Z3_rcf_num a);
/**
\brief Return the value a^k
def_API('Z3_rcf_power', RCF_NUM, (_in(CONTEXT), _in(RCF_NUM), _in(UINT)))
*/
Z3_rcf_num Z3_API Z3_rcf_power(__in Z3_context c, __in Z3_rcf_num a, __in unsigned k);
/**
\brief Return Z3_TRUE if a < b