New unit testing skeleton

src/util/print.h

@@ -0,0 +1,55 @@
+#ifndef PRINT_H
+#define PRINT_H
+
+int print_uchar(unsigned char v);
+
+int print_char(char v);
+
+int print_short(short v);
+
+int print_ushort(unsigned short v);
+
+int print_int(int v);
+
+int print_uint(unsigned v);
+
+int print_long(long v);
+
+int print_ulong(unsigned long v);
+
+int print_long_long(long long v);
+
+int print_ulong_long(unsigned long long v);
+
+int print_float(float v);
+
+int print_double(double v);
+
+int print_long_double(long double v);
+
+int print_string(char *s);
+
+int print_pointer(void *v);
+
+int print_unknown();
+
+#define print(x) \
+    _Generic((x), \
+    unsigned char: print_uchar, \
+    char: print_char, \
+    short int: print_short, \
+    unsigned short int: print_ushort, \
+    int: print_int, \
+    unsigned int: print_uint, \
+    long int: print_long, \
+    unsigned long int: print_ulong, \
+    long long int: print_long_long, \
+    unsigned long long int: print_ulong_long, \
+    float: print_float,          \
+    double: print_double,                 \
+    long double: print_long_double,     \
+    char *: print_string, \
+    void *: print_pointer, \
+    default : print_unknown)(x)
+
+#endif