Programmer Guide/SPU Reference/LOG: Difference between revisions
From STX Wiki
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 20: | Line 20: | ||
note: | note: | ||
:The logarithm is computed using the following formula: <code>y = ln(a)/ln(b)<code>. | :The logarithm is computed using the following formula: <code>y = ln(a)/ln(b)</code>. | ||
:<code>ln</code> is the natural logarithm and both <code>a</code> and <code>b</code> must be greater than zero | :<code>ln</code> is the natural logarithm and both <code>a</code> and <code>b</code> must be greater than zero | ||
;See also: | ;See also: | ||
<[[../#Signal Processing Atoms|SP-atoms]]> | <[[../#Signal Processing Atoms|SP-atoms]]> | ||
<!-- AN, 2.5.2011 --> | <!-- AN, 2.5.2011 --> | ||
Latest revision as of 12:39, 2 May 2011
Compute logarithm of A to the base B.
[SPU LOG A B OUT Y]
| In | Out | Description |
|---|---|---|
| Anumber, Bnumber | Ynumber | Y = logB(A) |
| Avector, Bnumber | Yvector | Y[i] = logB(A[i]) |
| Avector, Bvector | Yvector | Y[i] = logB[i](A[i]) |
with: 0 ≤ i < length of Avector
note:
- The logarithm is computed using the following formula:
y = ln(a)/ln(b). lnis the natural logarithm and bothaandbmust be greater than zero- See also
<SP-atoms>
