move attr_prosody_value()

src/libespeak-ng/readclause.c

 	return NULL;
 }
 
-static int attr_prosody_value(int param_type, const wchar_t *pw, int *value_out)
-{
-	int sign = 0;
-	wchar_t *tail;
-	double value;
-
-	while (iswspace(*pw)) pw++;
-	if (*pw == '+') {
-		pw++;
-		sign = 1;
-	}
-	if (*pw == '-') {
-		pw++;
-		sign = -1;
-	}
-	value = (double)wcstod(pw, &tail);
-	if (tail == pw) {
-		// failed to find a number, return 100%
-		*value_out = 100;
-		return 2;
-	}
-
-	if (*tail == '%') {
-		if (sign != 0)
-			value = 100 + (sign * value);
-		*value_out = (int)value;
-		return 2; // percentage
-	}
-
-	if ((tail[0] == 's') && (tail[1] == 't')) {
-		double x;
-		// convert from semitones to a  frequency percentage
-		x = pow((double)2.0, (double)((value*sign)/12)) * 100;
-		*value_out = (int)x;
-		return 2; // percentage
-	}
-
-	if (param_type == espeakRATE) {
-		if (sign == 0)
-			*value_out = (int)(value * 100);
-		else
-			*value_out = 100 + (int)(sign * value * 100);
-		return 2; // percentage
-	}
-
-	*value_out = (int)value;
-	return sign;   // -1, 0, or 1
-}
-
 static int AddNameData(const char *name, int wide)
 {
 	// Add the name to the namedata and return its position

src/libespeak-ng/ssml.c

 	return ix;
 }
 
+int attr_prosody_value(int param_type, const wchar_t *pw, int *value_out)
+{
+	int sign = 0;
+	wchar_t *tail;
+	double value;
+
+	while (iswspace(*pw)) pw++;
+	if (*pw == '+') {
+		pw++;
+		sign = 1;
+	}
+	if (*pw == '-') {
+		pw++;
+		sign = -1;
+	}
+	value = (double)wcstod(pw, &tail);
+	if (tail == pw) {
+		// failed to find a number, return 100%
+		*value_out = 100;
+		return 2;
+	}
+
+	if (*tail == '%') {
+		if (sign != 0)
+			value = 100 + (sign * value);
+		*value_out = (int)value;
+		return 2; // percentage
+	}
+
+	if ((tail[0] == 's') && (tail[1] == 't')) {
+		double x;
+		// convert from semitones to a  frequency percentage
+		x = pow((double)2.0, (double)((value*sign)/12)) * 100;
+		*value_out = (int)x;
+		return 2; // percentage
+	}
+
+	if (param_type == espeakRATE) {
+		if (sign == 0)
+			*value_out = (int)(value * 100);
+		else
+			*value_out = 100 + (int)(sign * value * 100);
+		return 2; // percentage
+	}
+
+	*value_out = (int)value;
+	return sign;   // -1, 0, or 1
+}
+
 int GetVoiceAttributes(wchar_t *pw, int tag_type, SSML_STACK *ssml_sp, SSML_STACK *ssml_stack, int n_ssml_stack, char current_voice_id[])
 {
 	// Determines whether voice attribute are specified in this tag, and if so, whether this means

src/libespeak-ng/ssml.h

 int attrcmp(const wchar_t *string1, const char *string2);
 int attrlookup(const wchar_t *string1, const MNEM_TAB *mtab);
 int attrnumber(const wchar_t *pw, int default_value, int type);
+int attr_prosody_value(int param_type, const wchar_t *pw, int *value_out);
 int attrcopy_utf8(char *buf, const wchar_t *pw, int len);
 int GetVoiceAttributes(wchar_t *pw, int tag_type, SSML_STACK *ssml_sp, SSML_STACK *ssml_stack, int n_ssml_stack, char current_voice_id[]);