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FPA API: Added get_ebits/get_sbits + doc fixes

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2015-01-02 18:58:43 +00:00
parent 09814128a6
commit f684675a6e
2 changed files with 59 additions and 20 deletions
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20
src/api/api_fpa.cpp
View file

@ -649,6 +649,26 @@ extern "C" {
Z3_CATCH_RETURN(0);
}
unsigned int Z3_API Z3_mk_fpa_get_ebits(Z3_context c, Z3_sort s) {
Z3_TRY;
LOG_Z3_mk_fpa_get_ebits(c, s);
RESET_ERROR_CODE();
api::context * ctx = mk_c(c);
unsigned r = ctx->float_util().get_ebits(to_sort(s));
RETURN_Z3(r);
Z3_CATCH_RETURN(0);
}
unsigned Z3_API Z3_mk_fpa_get_sbits(Z3_context c, Z3_sort s) {
Z3_TRY;
LOG_Z3_mk_fpa_get_sbits(c, s);
RESET_ERROR_CODE();
api::context * ctx = mk_c(c);
unsigned r = ctx->float_util().get_sbits(to_sort(s));
RETURN_Z3(r);
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_mk_fpa_to_ieee_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_mk_fpa_to_ieee_bv(c, t);

59
src/api/z3_fpa.h
View file

@ -228,7 +228,7 @@ extern "C" {
Z3_sort Z3_API Z3_mk_fpa_sort_128(__in Z3_context c);
/**
\brief Create a NaN of sort s.
\brief Create a floating-point NaN of sort s.
\param c logical context.
\param s target sort
@ -266,6 +266,7 @@ extern "C" {
/**
\brief Create an expression of FloatingPoint sort from three bit-vector expressions.
This is the operator named `fp' in the SMT FP theory definition.
Note that \c sign is required to be a bit-vector of size 1. Significand and exponent
are required to be greater than 1 and 2 respectively. The FloatingPoint sort
of the resulting expression is automatically determined from the bit-vector sizes
@ -495,7 +496,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_round_to_integral(__in Z3_context c, __in Z3_ast rm, __in Z3_ast t);
/**
\brief Minimum of floating-point numbers
\brief Minimum of floating-point numbers.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -508,7 +509,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_min(__in Z3_context c, __in Z3_ast t1, __in Z3_ast t2);
/**
\brief Maximum of floating-point numbers
\brief Maximum of floating-point numbers.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -521,7 +522,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_max(__in Z3_context c, __in Z3_ast t1, __in Z3_ast t2);
/**
\brief Floating-point less than or equal
\brief Floating-point less than or equal.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -534,7 +535,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_leq(__in Z3_context c, __in Z3_ast t1, __in Z3_ast t2);
/**
\brief Floating-point less-than
\brief Floating-point less than.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -547,7 +548,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_lt(__in Z3_context c, __in Z3_ast t1, __in Z3_ast t2);
/**
\brief Floating-point greater than or equal
\brief Floating-point greater than or equal.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -560,7 +561,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_geq(__in Z3_context c, __in Z3_ast t1, __in Z3_ast t2);
/**
\brief Floating-point greater-than
\brief Floating-point greater than.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -573,7 +574,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_gt(__in Z3_context c, __in Z3_ast t1, __in Z3_ast t2);
/**
\brief Floating-point equality
\brief Floating-point equality.
\param c logical context.
\param t1 term of FloatingPoint sort.
@ -636,7 +637,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_is_infinite(__in Z3_context c, __in Z3_ast t);
/**
\brief Predicate indicating whether t is a NaN
\brief Predicate indicating whether t is a NaN.
\param c logical context.
\param t term of FloatingPoint sort.
@ -682,16 +683,15 @@ extern "C" {
\param s floating-point sort.
s must be a FloatingPoint sort, t must be of bit-vector sort, and the bit-vector
size of bv, m, must be equal to ebits+sbits of s. The format of the bit-vector is
as defined by the IEEE 754-2008 interchange format and the resulting floating-point
sort (ebits, sbits) is automatically determined.
size of bv must be equal to ebits+sbits of s. The format of the bit-vector is
as defined by the IEEE 754-2008 interchange format.
def_API('Z3_mk_fpa_to_fp_bv', AST, (_in(CONTEXT),_in(AST),_in(SORT)))
*/
Z3_ast Z3_API Z3_mk_fpa_to_fp_bv(__in Z3_context c, __in Z3_ast bv, __in Z3_sort s);
/**
\brief Conversion of a floating-point term into another floating-point term of different floating-point sort.
\brief Conversion of a FloatingPoint term into another term of different FloatingPoint sort.
Produces a term that represents the conversion of a floating-point term t to a
floating-point term of sort s. If necessary, the result will be rounded according
@ -768,8 +768,8 @@ extern "C" {
\brief Conversion of a floating-point term into an unsigned bit-vector.
Produces a term that represents the conversion of the floating-poiunt term t into a
bit-vector term in unsigned 2's complement format. If necessary, the result will be
rounded according to rounding mode rm.
bit-vector term of size sz in unsigned 2's complement format. If necessary, the result
will be rounded according to rounding mode rm.
\param c logical context.
\param rm term of RoundingMode sort.
@ -784,8 +784,8 @@ extern "C" {
\brief Conversion of a floating-point term into a signed bit-vector.
Produces a term that represents the conversion of the floating-poiunt term t into a
bit-vector term in signed 2's complement format. If necessary, the result will be
rounded according to rounding mode rm.
bit-vector term of size sz in signed 2's complement format. If necessary, the result
will be rounded according to rounding mode rm.
\param c logical context.
\param rm term of RoundingMode sort.
@ -797,7 +797,7 @@ extern "C" {
Z3_ast Z3_API Z3_mk_fpa_to_sbv(__in Z3_context c, __in Z3_ast rm, __in Z3_ast t, __in unsigned sz);
/**
\brief Conversion of a floating-point term into a real number.
\brief Conversion of a floating-point term into a real-numbered term.
Produces a term that represents the conversion of the floating-poiunt term t into a
real number. Note that this type of conversion will often result in non-linear
@ -810,11 +810,30 @@ extern "C" {
*/
Z3_ast Z3_API Z3_mk_fpa_to_real(__in Z3_context c, __in Z3_ast t);
/**
@name Z3-specific extensions
*/
/*@{*/
/**
\brief Retrieves the number of bits reserved for the exponent in a FloatingPoint sort.
\param s FloatingPoint sort.
def_API('Z3_mk_fpa_get_ebits', UINT, (_in(CONTEXT),_in(SORT)))
*/
unsigned Z3_API Z3_mk_fpa_get_ebits(__in Z3_context c, __in Z3_sort s);
/**
\brief Retrieves the number of bits reserved for the significand in a FloatingPoint sort.
\param s FloatingPoint sort.
def_API('Z3_mk_fpa_get_sbits', UINT, (_in(CONTEXT),_in(SORT)))
*/
unsigned Z3_API Z3_mk_fpa_get_sbits(__in Z3_context c, __in Z3_sort s);
/**
\brief Conversion of a floating-point term into a bit-vector term in IEEE 754-2008 format.
@ -842,8 +861,8 @@ extern "C" {
\param c logical context.
\param rm term of RoundingMode sort.
\param sig significand term of Real sort.
\param exp exponent term of Real sort.
\param s floating-point sort.
\param exp exponent term of Int sort.
\param s FloatingPoint sort.
s must be a FloatingPoint sort, rm must be of RoundingMode sort, t must be of real sort.