runtime.Int64 · builtin · Updated 2026-09-09

Int64.From

Convert an integer to signed 64-bit int64 with a range check.

builtincpuyehoint64

Built into Yeho; no import is needed. These additions have Windows CPU-oracle developer-host evidence. Kyber rejects these operations; this does not qualify Starfish or other targets.

Int64.From(integer value) -> int64

Status: registered-intrinsic

Parameters

integer value: An integer value in signed 64-bit range.

Call Int64.From

A complete typed call with illustrative values; native calls require the indicated host and resources.

cpu · builtin · type checked

int64 value = Int64.From(42)

project.mech

manifestVersion = "2"
package = "api.example.runtime__int64_from"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

Notes and source

Out-of-range values throw Error with type integer.range. No wrapping or clamping; bool, float and text are rejected.

Contract and host execution evidence: yeho/docs/runtime/hardware-host-tools.md. This small example was type checked, not executed.

yeho/src/compiler/common/intrinsic_registry.cpp:802