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float_log

Compute the decimal log of an XFL

Concepts

Behaviour

  • Compute a the decimal logarithm of an XFL number

  • Return the new XFL

❗️Warning

Due to speed constraints,float_log converts the argument to an IEEE base-2 double precision floating point before applying base 10 log. Therefore the returned result will often contain less precision than expected.

Definition

C

int64_t float_log (
    int64_t float1
);

Example

C

int64_t zero =
    float_log(float_one());

🚧Warning

If a negative number is passed the function will return COMPLEX_NOT_SUPPORTED if the root is an even root.

Parameters

Name
Type
Description

float1

int64_t

An XFL floating point enclosing number representing the floating point number to take the logarithm of

Return Code

Type
Description

int64_t

The computed logarithm If negative, an error: INVALID_FLOAT - the supplied parameter was not a valid XFL enclosing number COMPLEX_NOT_SUPPORTED - the supplied parameter was a negative number which would result in a complex return value.

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