checkasm: add float_dsp tests

Ported from libavutil/tests/float_dsp.c
Signed-off-by: James Almer <jamrial@gmail.com>

tests/checkasm/Makefile

@@ -30,6 +30,7 @@ AVFILTEROBJS-$(CONFIG_COLORSPACE_FILTER) += vf_colorspace.o
 CHECKASMOBJS-$(CONFIG_AVFILTER) += $(AVFILTEROBJS-yes)
 
 AVUTILOBJS                              += fixed_dsp.o
+AVUTILOBJS                              += float_dsp.o
 
 CHECKASMOBJS-$(CONFIG_AVUTIL)  += $(AVUTILOBJS)
 

tests/checkasm/checkasm.c

@@ -131,6 +131,7 @@ static const struct {
 #endif
 #if CONFIG_AVUTIL
         { "fixed_dsp", checkasm_check_fixed_dsp },
+        { "float_dsp", checkasm_check_float_dsp },
 #endif
     { NULL }
 };
@@ -285,6 +286,25 @@ int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
     return 1;
 }
 
+int double_near_abs_eps(double a, double b, double eps)
+{
+    double abs_diff = fabs(a - b);
+
+    return abs_diff < eps;
+}
+
+int double_near_abs_eps_array(const double *a, const double *b, double eps,
+                              unsigned len)
+{
+    unsigned i;
+
+    for (i = 0; i < len; i++) {
+        if (!double_near_abs_eps(a[i], b[i], eps))
+            return 0;
+    }
+    return 1;
+}
+
 /* Print colored text to stderr if the terminal supports it */
 static void color_printf(int color, const char *fmt, ...)
 {

tests/checkasm/checkasm.h

@@ -39,6 +39,7 @@ void checkasm_check_bswapdsp(void);
 void checkasm_check_colorspace(void);
 void checkasm_check_fixed_dsp(void);
 void checkasm_check_flacdsp(void);
+void checkasm_check_float_dsp(void);
 void checkasm_check_fmtconvert(void);
 void checkasm_check_h264dsp(void);
 void checkasm_check_h264pred(void);
@@ -70,6 +71,9 @@ int float_near_abs_eps_array(const float *a, const float *b, float eps,
                              unsigned len);
 int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
                                  unsigned max_ulp, unsigned len);
+int double_near_abs_eps(double a, double b, double eps);
+int double_near_abs_eps_array(const double *a, const double *b, double eps,
+                              unsigned len);
 
 extern AVLFG checkasm_lfg;
 #define rnd() av_lfg_get(&checkasm_lfg)

tests/fate/checkasm.mak

@@ -4,6 +4,7 @@ FATE_CHECKASM = fate-checkasm-alacdsp                                   \
                 fate-checkasm-bswapdsp                                  \
                 fate-checkasm-fixed_dsp                                 \
                 fate-checkasm-flacdsp                                   \
+                fate-checkasm-float_dsp                                 \
                 fate-checkasm-fmtconvert                                \
                 fate-checkasm-h264dsp                                   \
                 fate-checkasm-h264pred                                  \