PIC Microcontroller Math Method
IEEE<>Microchip format conversion
From Microchip Application Note AN575:
;IEEE to MCHIP format conversion rl AARGB0 ;IEEE -> Microchip rl AEXP rr AARGB0 ;MCHIP to IEEE format conversion rl AARGB0 ;IEEE <- MICROCHIP rr AEXP rr AARGB0
| Format | 8-bit biased exponent (exponent + 127) |
Mantissa | ||
AEXP | AARGB0(MSB) | AARGB1 | AARGB2 | |
| IEEE754 32-bit | sxxx xxxx | y.xxx xxxx | xxxx xxxx | xxxx xxxx |
| Microchip 32-bit | xxxx xxxy | s.xxx xxxx | xxxx xxxx | xxxx xxxx |
| Microchip 24-bit | xxxx xxxy | s.xxx xxxx | xxxx xxxx | n/a |
s - sign bit of mantissa
y - least significant bit of biased exponent
| file: /techref/scenix/lib/math/ieee-mchip_sx.htm, 1KB, , updated: 2004/6/10 13:40, local time: 2010/3/12 03:42,
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