float_exponent
Get the exponent of an XFL enclosing number
Concepts
Behaviour
Return the exponent part of an XFL as a signed integer
Definition
Because exponents can be negative, and because negatives are reserved for error states, exponents cannot be returned from functions. Therefore this function has become a macro as shown below.
#define float_exponent(f)\
(((int32_t)(((f) >> 54U) & 0xFFU)) - 97)
Example
int64_t exponent =
float_exponent(float_one());
Parameters
Name
Type
Description
float1
int64_t
An XFL floating point enclosing number
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