如何转换binary32漂浮在红宝石

Question

我在IEEE 32

如何0x0040EDC2转换为-118,625编码的binary32？

我已经尝试了几个包装和解压缩选项没有成功。

IEEE：http://en.wikipedia.org/wiki/Single-precision_floating-point_format

马努

Answer 1

$ irb 
irb(main):001:0> bin = "\x00\x40\xED\xC2" 
=> "\000@\355\302" 
irb(main):002:0> bin.unpack 'f' 
=> [-118.625] 
irb(main):003:0> bin.unpack 'e' 
=> [-118.625] 
irb(main):004:0> bin.unpack 'F' 
=> [-118.625] 
irb(main):005:0> i = 0x0040edc2 
=> 4255170 
irb(main):006:0> bin = [i].pack('L') 
=> "\xC2\xED@\x00" 
irb(main):007:0> bin.unpack 'g' 
=> [-118.625] 
irb(main):008:0> RUBY_PLATFORM 
=> "x86_64-linux" 
irb(main):009:0> RUBY_VERSION 
=> "1.9.2"