I am trying to put a signed 16 bit number into the rightmost 16 bits
of a u32 buffer.
I have something that nearly works:
test = (analogue_out(0) < 0 ) ?
0x00008000 | (u32)(analogue_out(0) * scale(0) * -3276.7) :
0x00000000 | (u32)(analogue_out(0) * scale(0) * 3276.7);
(Though, unexpectedly, for scale = 10.0 and analogue_out = 1 or -1 the
output is 0x00007FFE and 0x000FFFE respectively, which slightly
surprises me)
However, surely there must be a tidier and faster way? (probably using
s16 typecasting and a bitwise OR?
--
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"
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