f64 에뮬레이션

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f64가 없는 대상에서 쓰는 배정밀도입니다. f32 레인 두 개에 나눠 담아 계산합니다.

시그니처, 설명, 예제는 커밋 26de7be8의 컴파일러 소스에서 그대로 가져온 영어 원문입니다.

FP64_GUARD_NAME 상수

The fixed name ('_fp64') of the guard texture binding that fp64Lower adds to every module whose lowered code calls a guarded df64 helper.

Fp64Flavor 타입

Which arithmetic primitives back the emulated-double (df64) helper functions that fp64Lower injects.

Fp64FlavorSignals 인터페이스

The device-identification signals recommendFp64Flavor and isAppleGpu read to pick the df64 flavour a device needs: 'integer' on Apple GPUs, where Metal runs underneath, and 'float' everywhere else.

fp64Guard 함수

Pin the slot of the fp64 guard texture.

Fp64GuardHandle 인터페이스

The value fp64Guard returns: a binding declaration for the _fp64 guard texture, pinned to the caller's chosen.

fp64Lower 함수

Rewrite every f64 value in a module into its two-f32 emulation, so that no backend has to spell the type.

Fp64LowerOptions 인터페이스

Options for fp64Lower.

isAppleGpu 함수

True when any signal identifies an Apple GPU / Metal-backed context.

recommendFp64Flavor 함수

Pick the df64 flavour a device needs for correct results, from whatever identifying signals a host has.

splitF64 함수

Split a JavaScript double into the high and low f32 pair an f64T value carries on the GPU.

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