Git-Mirrors/portapack-mayhem
1
0
Fork 0
mirror of https://github.com/eried/portapack-mayhem.git synced 2024-10-01 01:26:06 -04:00
Code Issues Packages Projects Releases Wiki Activity

Limit scope of some function variables.

Browse Source
This commit is contained in:
Jared Boone 2016-02-06 16:23:55 -08:00
parent cd56847326
commit ac2320f0c5
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
firmware/baseband/dsp_decimate.cpp
View File

@ -563,20 +563,18 @@ buffer_c16_t DecimateBy2CIC3::execute(
*/ */
uint32_t t1 = _iq0; uint32_t t1 = _iq0;
uint32_t t2 = _iq1; uint32_t t2 = _iq1;
uint32_t t3, t4;
const uint32_t taps = 0x00000003; const uint32_t taps = 0x00000003;
auto s = src.p; auto s = src.p;
auto d = dst.p; auto d = dst.p;
const auto d_end = &dst.p[src.count / 2]; const auto d_end = &dst.p[src.count / 2];
uint32_t i, q;
while(d < d_end) { while(d < d_end) {
i = __SXTH(t1, 0); /* 1: I0 */ uint32_t i = __SXTH(t1, 0); /* 1: I0 */
q = __SXTH(t1, 16); /* 1: Q0 */ uint32_t q = __SXTH(t1, 16); /* 1: Q0 */
i = __SMLABB(t2, taps, i); /* 1: I1*3 + I0 */ i = __SMLABB(t2, taps, i); /* 1: I1*3 + I0 */
q = __SMLATB(t2, taps, q); /* 1: Q1*3 + Q0 */ q = __SMLATB(t2, taps, q); /* 1: Q1*3 + Q0 */
t3 = *__SIMD32(s)++; /* 3: Q2:I2 */ const uint32_t t3 = *__SIMD32(s)++; /* 3: Q2:I2 */
t4 = *__SIMD32(s)++; /* Q3:I3 */ const uint32_t t4 = *__SIMD32(s)++; /* Q3:I3 */
i = __SMLABB(t3, taps, i); /* 1: I2*3 + I1*3 + I0 */ i = __SMLABB(t3, taps, i); /* 1: I2*3 + I1*3 + I0 */
q = __SMLATB(t3, taps, q); /* 1: Q2*3 + Q1*3 + Q0 */ q = __SMLATB(t3, taps, q); /* 1: Q2*3 + Q1*3 + Q0 */