Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add is_infinite, is_normal, is_subnormal, is_zero, is_nan to Float #336

Open
wants to merge 4 commits into
base: master
Choose a base branch
from
Open

Add is_infinite, is_normal, is_subnormal, is_zero, is_nan to Float #336

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
3400ce1
Add is_infinite, is_normal, is_subnormal, is_zero, is_nan to Float
twizmwazin Feb 10, 2025
5e5b030
Add tests
twizmwazin Feb 11, 2025
86ae768
Format
twizmwazin Feb 11, 2025
d14d224
Add assertions to tests
twizmwazin Feb 12, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions z3/src/ast.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1140,6 +1140,11 @@ impl<'ctx> Float<'ctx> {
unop! {
unary_abs(Z3_mk_fpa_abs, Self);
unary_neg(Z3_mk_fpa_neg, Self);
is_infinite(Z3_mk_fpa_is_infinite, Bool<'ctx>);
is_normal(Z3_mk_fpa_is_normal, Bool<'ctx>);
is_subnormal(Z3_mk_fpa_is_subnormal, Bool<'ctx>);
is_zero(Z3_mk_fpa_is_zero, Bool<'ctx>);
is_nan(Z3_mk_fpa_is_nan, Bool<'ctx>);
}
binop! {
lt(Z3_mk_fpa_lt, Bool<'ctx>);
Expand Down
50 changes: 50 additions & 0 deletions z3/tests/ops.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,31 @@ fn test_float32_ops() {
};
}
test_unary_op!(-);

let solver = Solver::new(&ctx);

// Infinite
solver.check_assumptions(&[Float::from_f32(&ctx, f32::INFINITY).is_infinite()]);
twizmwazin marked this conversation as resolved.
Show resolved Hide resolved
solver.check_assumptions(&[Float::from_f32(&ctx, f32::NEG_INFINITY).is_infinite()]);
solver.check_assumptions(&[Float::from_f32(&ctx, 0f32).is_infinite().not()]);

// Normal
solver.check_assumptions(&[Float::from_f32(&ctx, 1f32).is_normal()]);
solver.check_assumptions(&[Float::from_f32(&ctx, f32::MIN_POSITIVE / 2.0)
.is_normal()
.not()]);

// Subnormal
solver.check_assumptions(&[Float::from_f32(&ctx, f32::MIN_POSITIVE / 2.0).is_subnormal()]);
solver.check_assumptions(&[Float::from_f32(&ctx, 1f32).is_subnormal().not()]);

// Zero
solver.check_assumptions(&[Float::from_f32(&ctx, 0f32).is_zero()]);
solver.check_assumptions(&[Float::from_f32(&ctx, 1f32).is_zero().not()]);

// NaN
solver.check_assumptions(&[Float::from_f32(&ctx, f32::NAN).is_nan()]);
solver.check_assumptions(&[Float::from_f32(&ctx, 1f32).is_nan().not()]);
}

#[test]
Expand All @@ -150,6 +175,31 @@ fn test_double_ops() {
};
}
test_unary_op!(-);

let solver = Solver::new(&ctx);

// Infinite
solver.check_assumptions(&[Float::from_f64(&ctx, f64::INFINITY).is_infinite()]);
solver.check_assumptions(&[Float::from_f64(&ctx, f64::NEG_INFINITY).is_infinite()]);
solver.check_assumptions(&[Float::from_f64(&ctx, 0f64).is_infinite().not()]);

// Normal
solver.check_assumptions(&[Float::from_f64(&ctx, 1f64).is_normal()]);
solver.check_assumptions(&[Float::from_f64(&ctx, f64::MIN_POSITIVE / 2.0)
.is_normal()
.not()]);

// Subnormal
solver.check_assumptions(&[Float::from_f64(&ctx, f64::MIN_POSITIVE / 2.0).is_subnormal()]);
solver.check_assumptions(&[Float::from_f64(&ctx, 1f64).is_subnormal().not()]);

// Zero
solver.check_assumptions(&[Float::from_f64(&ctx, 0f64).is_zero()]);
solver.check_assumptions(&[Float::from_f64(&ctx, 1f64).is_zero().not()]);

// NaN
solver.check_assumptions(&[Float::from_f64(&ctx, f64::NAN).is_nan()]);
solver.check_assumptions(&[Float::from_f64(&ctx, 1f64).is_nan().not()]);
}

#[test]
Expand Down