| Time |
Nick |
Message |
| 00:22 |
MTDiscord |
<josiah_wi> Ah, good point! These nuances probably aren't as important as understanding the algorithm, so I might file them away investigate once I actually understand enough to have any business doing so. |
| 00:23 |
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| 15:38 |
MTDiscord |
<exe_virus> The underlying variables of a float are stored in a double in the assembly code. I.e. a float uses the same amount of memory and address space on 64bit machines as a double. Compiler specific, but that's how both GCC and VC++ do it since at least VC13+ and GCC 6+ in my testing. So unless we really want the lower precision, it's just that: lower precision. |
| 15:41 |
MTDiscord |
<Warr1024> Haha, that's actually pretty funny. Actually makes some sense too, i.e. in simplifying the FPU interface. |
| 15:45 |
sfan5 |
I don't know what you tested but that's trivially proven wrong https://godbolt.org/z/96rGrsfjb |
| 15:48 |
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| 15:50 |
sfan5 |
if you meant that they use the same registers (on x86 and x86-64) that's true |
| 15:50 |
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| 16:06 |
pgimeno |
not true for SSE2+ though |
| 16:14 |
sfan5 |
it's xmm[0-9] either way, just that if you're working with multiple values only two doubles fit but four floats |
| 16:14 |
sfan5 |
right? |
| 16:34 |
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pgimeno |
right |
| 17:00 |
pgimeno |
https://godbolt.org/z/ncofrncqP |
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