def smx

bend-collections-laws-math@1.0.0.0 · proofs/math/typed/f64adde.bend:77

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/f64.bend as SF
import bend-collections-laws-math@1.0.0.0/spec/math/w64.bend as SW
import bend-collections-laws-math@1.0.0.0/src/math/f64.bend as F
import bend-collections-laws-math@1.0.0.0/src/math/w64.bend as X
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as WU

77# SoftFloat's exact equal-exponent difference is the rounded difference
78def smx(+one: Nat, +h1: {one == 1n : Nat}, +s: Bool, +e1: Nat, +d: WU.U64, +D: Nat, +hd: {SW.value(d) == D : Nat}, +hD: {C.fits(52n, D) == True{} : Bool}, +hz: {Nat.is_eq(D, 0n) == False{} : Bool}, +hov: {Nat.is_lt(Nat.add(e1, 1n), 2047n) == True{} : Bool}) -> {F.sm_exact(s, e1, d) == SF.round(s, D, Nat.add(1926n, e1)) : F.F64}:
79  smx_c(one, h1, s, e1, d, D, hd, hD, hz, hov, Nat.is_lt(e1, Nat.sub(X.clz(d), 11n)), {==})