C++ / Python Equivalent of Matlab's num2hex

Question

Is there a function in C++ or Python that is equivalent to MATLAB's num2hex function?

Python's float.hex and int.hex functions do not give the same result as MATLAB's num2hex function.

Answer 1

MATLAB

% single
>> num2hex(single(1))
ans =
3f800000

% double
>> num2hex(1)
ans =
3ff0000000000000

Python

>>> x = 1.0

# 32-bit float
>>> hex(struct.unpack('!l', struct.pack('!f',x))[0])
'0x3f800000'

# 64-bit float
>>> hex(struct.unpack('!q', struct.pack('!d',x))[0])
'0x3ff0000000000000L'