问题
I am able to extract values from modbus as 16-bit shorts (unsigned) or as ints (should be treated as 16-bit words). I am tasked to combine two values to create a single 32 bit float value using java.
some example values I observed using a gui program:
- int + int = float
- 0 + 16256 = 1
- 0 + 17096 = 100
- 0 + 17097 = 100.5
- 0 + 17530 = 1000
- 8192 + 17530 = 1000.5
I attempted bit wise operators but that didn't seem to do the trick. leaves me scratching my head!
回答1:
You can use Float.intBitsToFloat(int bits) to build a float from the bits of an int.
short high = ... // the high 16 bits
short low = ... // the low 16 bits
int combined = (high << 16) | low;
float num = Float.intBitsToFloat(combined);
for example:
short high = 17530;
short low = 8192;
produces the float 1000.5.
来源：https://stackoverflow.com/questions/43908820/two-16-bit-ints-to-one-32-bit-float-value