float-dsp-test: do not use C99's predefined __func__

It is not supported by all compilers on FATE. Fixes "some test were
skipped" errors.

libavutil/float_dsp.c

@@ -216,7 +216,7 @@ static int test_vector_fmul(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp,
     fdsp->vector_fmul(odst, v1, v2, LEN);
 
     if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_fmul failed\n");
 
     return ret;
 }
@@ -236,7 +236,7 @@ static int test_vector_fmac_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *c
     fdsp->vector_fmac_scalar(odst, src0, scale, LEN);
 
     if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMAC_SCALAR_CONST))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_fmac_scalar failed\n");
 
     return ret;
 }
@@ -252,7 +252,7 @@ static int test_vector_fmul_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *c
     fdsp->vector_fmul_scalar(odst, v1, scale, LEN);
 
     if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_fmul_scalar failed\n");
 
     return ret;
 }
@@ -268,7 +268,7 @@ static int test_vector_dmul_scalar(AVFloatDSPContext *fdsp, AVFloatDSPContext *c
     fdsp->vector_dmul_scalar(odst, v1, scale, LEN);
 
     if (ret = compare_doubles(cdst, odst, LEN, DBL_EPSILON))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_dmul_scalar failed\n");
 
     return ret;
 }
@@ -285,7 +285,7 @@ static int test_vector_fmul_window(AVFloatDSPContext *fdsp, AVFloatDSPContext *c
     fdsp->vector_fmul_window(odst, v1, v2, v3, LEN / 2);
 
     if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMUL_WINDOW_CONST))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_fmul_window failed\n");
 
     return ret;
 }
@@ -302,7 +302,7 @@ static int test_vector_fmul_add(AVFloatDSPContext *fdsp, AVFloatDSPContext *cdsp
     fdsp->vector_fmul_add(odst, v1, v2, v3, LEN);
 
     if (ret = compare_floats(cdst, odst, LEN, ARBITRARY_FMUL_ADD_CONST))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_fmul_add failed\n");
 
     return ret;
 }
@@ -318,7 +318,7 @@ static int test_vector_fmul_reverse(AVFloatDSPContext *fdsp, AVFloatDSPContext *
     fdsp->vector_fmul_reverse(odst, v1, v2, LEN);
 
     if (ret = compare_floats(cdst, odst, LEN, FLT_EPSILON))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "vector_fmul_reverse failed\n");
 
     return ret;
 }
@@ -342,7 +342,7 @@ static int test_butterflies_float(AVFloatDSPContext *fdsp, AVFloatDSPContext *cd
 
     if ((ret = compare_floats(cv1, ov1, LEN, FLT_EPSILON)) ||
         (ret = compare_floats(cv2, ov2, LEN, FLT_EPSILON)))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "butterflies_float failed\n");
 
     return ret;
 }
@@ -358,7 +358,7 @@ static int test_scalarproduct_float(AVFloatDSPContext *fdsp, AVFloatDSPContext *
     oprod = fdsp->scalarproduct_float(v1, v2, LEN);
 
     if (ret = compare_floats(&cprod, &oprod, 1, ARBITRARY_SCALARPRODUCT_CONST))
-        av_log(NULL, AV_LOG_ERROR, "%s failed\n", __func__);
+        av_log(NULL, AV_LOG_ERROR, "scalarproduct_float failed\n");
 
     return ret;
 }