def checked_add
bend-collections-laws-math@1.0.0.0 · proofs/math/typed/fix32.bend:77
import bend-collections-laws-math@1.0.0.0/proofs/math/typed/fix32.bend as Fix32
import Base
import bend-collections-laws-math@1.0.0.0/spec/lib/common.bend as C
import bend-collections-laws-math@1.0.0.0/spec/math/generic.bend as SG
import bend-collections-laws-math@1.0.0.0/spec/math/fixed.bend as SF
import bend-collections-laws-math@1.0.0.0/src/math/fixed.bend as F
import bend-collections-laws-math@1.0.0.0/proofs/math/typed/fixgen.bend as G
77def checked_add(+a: U32, +b: U32) -> SF.CheckedAdd.value(~U32, ~SG.u32_val, ~F.u32_checked_add, 32n, a, b):
78 G.chk_fit(~U32, ~SG.u32_val, 32n, Nat.add(SG.u32_val(a), SG.u32_val(b)), U32.add(a, b), F.u32_add_over(a, b), add_over(a, b), add_low(a, b), C.fits(32n, Nat.add(SG.u32_val(a), SG.u32_val(b))), {==})