Create a NUM2_THOUSANDS_VAR_BITS define.

src/libespeak-ng/numbers.c

 	if (((value % 100) > 10) && ((value % 100) < 20))
 		teens = true;
 
-	switch ((translator->langopts.numbers2 >> 6) & 0x7)
+	switch (translator->langopts.numbers2 & NUM2_THOUSANDS_VAR_BITS)
 	{
-	case 1: // lang=ru  use singular for xx1 except for x11
+	case NUM2_THOUSANDS_VAR1: // lang=ru  use singular for xx1 except for x11
 		if ((teens == false) && ((value % 10) == 1))
 			return "1M";
 		break;
-	case 2: // lang=cs,sk
+	case NUM2_THOUSANDS_VAR2: // lang=cs,sk
 		if ((value >= 2) && (value <= 4))
 			return "0MA";
 		break;
-	case 3: // lang=pl
+	case NUM2_THOUSANDS_VAR3: // lang=pl
 		if ((teens == false) && (((value % 10) >= 2) && ((value % 10) <= 4)))
 			return "0MA";
 		break;
-	case 4: // lang=lt
+	case NUM2_THOUSANDS_VAR4: // lang=lt
 		if ((teens == true) || ((value % 10) == 0))
 			return "0MB";
 		if ((value % 10) == 1)
 			return "0MA";
 		break;
-	case 5: // lang=bs,hr,sr
+	case NUM2_THOUSANDS_VAR5: // lang=bs,hr,sr
 		if (teens == false) {
 			if ((value % 10) == 1)
 				return "1M";

src/libespeak-ng/translate.h

 
 	int numbers;
 
-#define NUM2_THOUSANDS_VAR1        0x00000040
-#define NUM2_THOUSANDS_VAR2        0x00000080
-#define NUM2_THOUSANDS_VAR3        0x000000c0
-#define NUM2_THOUSANDS_VAR4        0x00000100
-#define NUM2_THOUSANDS_VAR5        0x00000140
+#define NUM2_THOUSANDS_VAR_BITS    0x000001c0
 #define NUM2_SWAP_THOUSANDS        0x00000200
 #define NUM2_ORDINAL_NO_AND        0x00000800
 #define NUM2_MULTIPLE_ORDINAL      0x00001000
 #define NUM2_ORDINAL_AND_THOUSANDS 0x00040000
 #define NUM2_ORDINAL_DROP_VOWEL    0x00080000 // currently only for tens and units
 #define NUM2_ZERO_TENS             0x00100000
+
+#define NUM2_THOUSANDS_VAR1        0x00000040
+#define NUM2_THOUSANDS_VAR2        0x00000080
+#define NUM2_THOUSANDS_VAR3        0x000000c0
+#define NUM2_THOUSANDS_VAR4        0x00000100
+#define NUM2_THOUSANDS_VAR5        0x00000140
+
 	// bits 1-4  use variant form of numbers before thousands,millions,etc.
 	// bits 6-8  use different forms of thousand, million, etc (M MA MB)
 	// bit9=(LANG=rw) say "thousand" and "million" before its number, not after