18 Jul
2008
18 Jul
'08
2:03 p.m.
sk:
On 18.07.2008, at 19:47, Don Stewart wrote:
sk:
On 17.07.2008, at 21:46, Lennart Augustsson wrote:
If scaleFloat and exponent are implemented with bit twiddling they can be quite fast.
is there a way in ghc to 'cast' between float/int32 and double/int64 (without going through memory)?
Yeah,
"fromIntegral/Int->Float" fromIntegral = int2Float "truncate/Float->Int" truncate = float2Int
"truncate/Double->Int" truncate = double2Int
with appropriate no-op fromIntegrals for the 32 and 64 variants.
i actually meant something like *(uint32_t*)fptr, but thanks anyway ;)
ah well, these should compile into as-close-to-noops as possible.