@@ -20,6 +20,9 @@ using namespace std;
using namespace libcamera;
using namespace ipa;
+/* Q4_7(-8 .. 7.99219) Min: [0x0400:-8] -- Max: [0x03ff:7.99219] Step:0.0078125 */
+using Q4_7 = Quantized<FixedPointQTraits<4, 7, int16_t>>;
+
class FixedPointUtilsTest : public Test
{
protected:
@@ -172,6 +175,21 @@ protected:
fails += quantizedCheck<UQ1_7>(1.0f, 0b1'0000000, 1.0f); /* Mid */
fails += quantizedCheck<UQ1_7>(1.992f, 0b1'1111111, 1.99219f); /* Max */
+ /* Q4_7(-8 .. 7.99219) Min: [0x0400:-8] -- Max: [0x03ff:7.99219] Step:0.0078125 */
+ introduce<Q4_7>("Q4_7");
+ fails += quantizedCheck<Q4_7>(-8.0f, 0b1000'0000000, -8.0f); /* Min */
+ fails += quantizedCheck<Q4_7>(-0.008f, 0b1111'1111111, -0.0078125); /* -1 step */
+ fails += quantizedCheck<Q4_7>( 0.0f, 0b0000'0000000, 0.0f); /* Zero */
+ fails += quantizedCheck<Q4_7>( 0.008f, 0b0000'0000001, 0.0078125f); /* +1 step */
+ fails += quantizedCheck<Q4_7>( 7.992f, 0b0111'1111111, 7.99219f); /* Max */
+
+ /* Retain additional tests from original testFixedPoint() */
+ fails += quantizedCheck<Q4_7>( 0.2f, 0b0000'0011010, 0.203125f); /* 0x01a */
+ fails += quantizedCheck<Q4_7>(-0.2f, 0b1111'1100110, -0.203125f); /* 0x7e6 */
+ fails += quantizedCheck<Q4_7>(-0.8f, 0b1111'0011010, -0.796875f); /* 0x79a */
+ fails += quantizedCheck<Q4_7>(-0.4f, 0b1111'1001101, -0.398438f); /* 0x7cd */
+ fails += quantizedCheck<Q4_7>(-1.4f, 0b1110'1001101, -1.39844f); /* 0x74d */
+
/* Q12.4(-2048 .. 2047.94) Min: [0x8000:-2048] -- Max: [0x7fff:2047.94] Step:0.0625 */
introduce<Q12_4>("Q12_4");
fails += quantizedCheck<Q12_4>(0.0f, 0b000000000000'0000, 0.0f);
The existing fixed point test cases utilise a signed Q4.7 format. Add matching tests covering the same values and extend to validate the full type. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> --- v4: - Remove redundant "No Sign Extension" comment test/ipa/libipa/fixedpoint.cpp | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)