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| 23:35.57 | empyreanx | i'm writing a linear algebra library in c. i would like to support a wide range of systems, however i know that many do not support floating point arithmetic. so, on fixed point systems would it be useful to have macros that support this using something like my_add(a, b) or my_mult(a, b) instead of using the builtin operators? |
| 23:48.16 | m4t | shouldn't be necessary unless you have a separate fixed-point implementation that is more efficient than the compiler's |
| 23:50.10 | empyreanx | my understanding at least from my brother (an embedded systems engineer), is that a lot of the time there is no compiler support for fixed point and they have to write it themselves. |
| 23:50.43 | m4t | i don't think that is relevant on the types of systems that runs openembedded |
| 23:50.44 | empyreanx | i'm just wondering if this is how it's done when trying to write portable mathematical code for embedded systems |
| 23:50.59 | empyreanx | i just thought i'd ask, thanks anyways |
| 23:51.18 | m4t | someone else might have a better answer |
| 23:51.58 | m4t | if you're talking about something like a 8bit microcontroller, then it's a different than say a 32bit arm9 system without an fpu |