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Add binding for IEEE-754 bit-vector to FPA #383

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Add binding for IEEE-754 bit-vector to FPA #383

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5932c43
feat: convert ieee-754 bv to float
KpwnZ Nov 7, 2024
b065290
feat: convert to float32 or double directly
KpwnZ Nov 7, 2024
a4e1f1e
chore: format the code
KpwnZ Jul 22, 2025
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32 changes: 32 additions & 0 deletions z3/src/ast.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1138,6 +1138,38 @@ impl<'ctx> Float<'ctx> {
unsafe { BV::wrap(self.ctx, Z3_mk_fpa_to_ieee_bv(self.ctx.z3_ctx, self.z3_ast)) }
}

// Convert from IEEE-754 bit-vector
pub fn from_ieee_bv(bv: &BV<'ctx>, s: &Sort<'ctx>) -> Float<'ctx> {
unsafe {
Self::wrap(
bv.ctx,
Z3_mk_fpa_to_fp_bv(bv.ctx.z3_ctx, bv.z3_ast, s.z3_sort),
)
}
}

// Convert from IEEE-754 bit-vector
pub fn from_ieee_bv32(bv: &BV<'ctx>) -> Float<'ctx> {
let sort = Sort::float32(bv.ctx);
unsafe {
Self::wrap(
bv.ctx,
Z3_mk_fpa_to_fp_bv(bv.ctx.z3_ctx, bv.z3_ast, sort.z3_sort),
)
}
}

// Convert from IEEE-754 bit-vector
pub fn from_ieee_bv64(bv: &BV<'ctx>) -> Float<'ctx> {
let sort = Sort::double(bv.ctx);
unsafe {
Self::wrap(
bv.ctx,
Z3_mk_fpa_to_fp_bv(bv.ctx.z3_ctx, bv.z3_ast, sort.z3_sort),
)
}
}

unop! {
unary_abs(Z3_mk_fpa_abs, Self);
unary_neg(Z3_mk_fpa_neg, Self);
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