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FFT plugin: eliminate 64-bit math. This should result in faster and probably more accurate calculations.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25790 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Delyan Kratunov 2010-05-02 20:30:44 +00:00
parent 7f9d30ba3e
commit af466f3cbf
3 changed files with 21 additions and 23 deletions
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8
apps/plugins/fft/math.h
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@ -17,12 +17,4 @@
#define float_q15(a) float_q(a, 15)
#define float_q16(a) float_q(a, 16)
/**
* Fixed point square root via Newton-Raphson.
* @param a square root argument.
* @param fracbits specifies number of fractional bits in argument.
* @return Square root of argument in same fixed point format as input.
*/
int64_t fsqrt64(int64_t a, unsigned int fracbits);
#endif