!purego package bigmod import "unsafe" // The generic implementation relies on 64x64->128 bit multiplication and // 64-bit add-with-carry, which are compiler intrinsics on many architectures. // Wasm doesn't support those. Here we implement it with 32x32->64 bit // operations, which is more efficient on Wasm. func idx(x *uint, i uintptr) *uint { return (*uint)(unsafe.Pointer(uintptr(unsafe.Pointer(x)) + i*8)) } func addMulVVWWasm(z, x *uint, y uint, n uintptr) (carry uint) { const mask32 = 1<<32 -...