57   guint8 ulawbyte;  in mulaw_encode()  local
76     ulawbyte = ~(sign | (exponent << 4) | mantissa);  in mulaw_encode()
78     if (ulawbyte == 0)  in mulaw_encode()
79       ulawbyte = 0x02;          /* optional CCITT trap */  in mulaw_encode()
81     out[i] = ulawbyte;  in mulaw_encode()
107   guint8 ulawbyte;  in mulaw_decode()  local
112     ulawbyte = in[i];  in mulaw_decode()
113     ulawbyte = ~ulawbyte;  in mulaw_decode()
114     sign = (ulawbyte & 0x80);  in mulaw_decode()
115     exponent = (ulawbyte >> 4) & 0x07;  in mulaw_decode()
116     mantissa = ulawbyte & 0x0F;  in mulaw_decode()