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unbox the mix30 C stub #3

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merged 1 commit into from
Sep 13, 2021
Merged

unbox the mix30 C stub #3

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3 changes: 2 additions & 1 deletion PRNG.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -255,7 +255,8 @@ external mix64: int64 -> int64 = "pringo_mix64" "pringo_mix64_unboxed"
[@@unboxed] [@@noalloc]
external mix32: int64 -> int32 = "pringo_mix32" "pringo_mix32_unboxed"
[@@unboxed] [@@noalloc]
external mix30: int64 -> int = "pringo_mix30"
external mix30: (int64[@unboxed]) -> int = "pringo_mix30" "pringo_mix30_unboxed"
[@@noalloc]
external mixGamma: int64 -> int64 = "pringo_mixGamma" "pringo_mixGamma_unboxed"
[@@unboxed] [@@noalloc]

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6 changes: 3 additions & 3 deletions stubs.c
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Expand Up @@ -44,16 +44,16 @@ CAMLprim value pringo_mix32(value vz)
return caml_copy_int32(pringo_mix32_unboxed(Int64_val(vz)));
}

static inline intnat pringo_mix30_unboxed(uint64_t z)
CAMLprim value pringo_mix30_unboxed(uint64_t z)
{
z = (z ^ (z >> 33)) * 0xff51afd7ed558ccdULL;
z = (z ^ (z >> 33)) * 0xc4ceb9fe1a85ec53ULL;
return (intnat)(z >> 34);
return Val_long((intnat)(z >> 34));
}

CAMLprim value pringo_mix30(value vz)
{
return Val_long(pringo_mix30_unboxed(Int64_val(vz)));
return pringo_mix30_unboxed(Int64_val(vz));
}

static inline uint64_t mix64variant13(uint64_t z)
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