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Added accessors to extract sign/exponent/significand BV numerals from FP numerals.

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Christoph M. Wintersteiger 2016-09-16 16:48:22 +01:00
parent 5716eaafed
commit 6b474adc8a
7 changed files with 246 additions and 5 deletions
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3
src/api/ml/z3.ml
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@ -1324,6 +1324,9 @@ struct
let mk_to_real = Z3native.mk_fpa_to_real
let get_ebits = Z3native.fpa_get_ebits
let get_sbits = Z3native.fpa_get_sbits
let get_numeral_sign_bv = Z3native.fpa_get_numeral_sign_bv
let get_numeral_exponent_bv = Z3native.fpa_get_numeral_exponent_bv
let get_numeral_significand_bv = Z3native.fpa_get_numeral_significand_bv
let get_numeral_sign = Z3native.fpa_get_numeral_sign
let get_numeral_significand_string = Z3native.fpa_get_numeral_significand_string
let get_numeral_significand_uint = Z3native.fpa_get_numeral_significand_uint64

12
src/api/ml/z3.mli
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@ -2138,6 +2138,18 @@ sig
(** Retrieves the number of bits reserved for the significand in a FloatingPoint sort. *)
val get_sbits : context -> Sort.sort -> int
(** Return the sign of a floating-point numeral as a bit-vector expression.
Remark: NaN's do not have a bit-vector sign, so they are invalid arguments. *)
val get_numeral_sign_bv : context -> Expr.expr -> Expr.expr
(** Return the exponent of a floating-point numeral as a bit-vector expression.
Remark: +oo, -oo and NaN's do not have a bit-vector exponent, so they are invalid arguments. *)
val get_numeral_exponent_bv : context -> Expr.expr -> Expr.expr
(** Return the significand value of a floating-point numeral as a bit-vector expression.
Remark: +oo, -oo and NaN's do not have a bit-vector significand, so they are invalid arguments. *)
val get_numeral_significand_bv : context -> Expr.expr -> Expr.expr
(** Retrieves the sign of a floating-point literal. *)
val get_numeral_sign : context -> Expr.expr -> bool * int