avcodec/tests: added test for celp_math.c

Signed-off-by: Thomas Turner <thomastdt@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 48 insertions, 0 deletions

diff --git a/libavcodec/tests/celp_math.c b/libavcodec/tests/celp_math.c
new file mode 100644
index 0000000000..4b1c1867b5
--- /dev/null
+++ b/libavcodec/tests/celp_math.c
@@ -0,0 +1,48 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/libm.h"
+#include "libavcodec/celp_math.c"
+
+int main(void)
+{
+    int i;
+    const float f1[3]   = {0.0,  1.1,  2.2};
+    const float f2[3]   = {3.3,  4.4,  5.5};
+    const int16_t i1[3] = {6,  7,  8};
+    const int16_t i2[3] = {9, 10, 11};
+    float diff, largest, absa, absb;
+
+    float   r = ff_dot_productf(f1, f2, FF_ARRAY_ELEMS(f1));
+    int64_t d = ff_dot_product(i1, i2, FF_ARRAY_ELEMS(i1));
+
+#   define IsAlmostEqual(A, B, epsilon) \
+        diff = fabsf(A - B); \
+        absa = fabsf(A); \
+        absb = fabsf(B); \
+        largest = (absb > absa) ? absb : absa; \
+        av_assert0(diff <= largest * epsilon);
+
+    IsAlmostEqual(16.94f, r, 0.000001f);
+    av_assert0(212 == d);
+
+    for (i = 1024; i >= 1; i/=2)
+        av_assert0(ff_log2_q15(i) == (1<<15)*((int)log2(i))+(1<<2));
+
+    return 0;
+}