Sketch for LSM303 sensor

Other Hardware Sensors
1

Hi all!
I'm trying to work with the 3-axis accelerometer and 3-axis magnetometer LSM303, using Arduino and Labview. I found an example of sketch on-line and I'm studying and analyzing it. Could someone help me with these part of the code? Why the two void functions are realized in different kind? Thanks.

void getLSM303_accel(int * rawValues) //
{
rawValues[Z] = ((int)LSM303_read(OUT_X_L_A) << 8 ) | (LSM303_read(OUT_X_H_A)); // combinazione di MSB ed LSB
rawValues[X] = ((int)LSM303_read(OUT_Y_L_A) << 8 ) | (LSM303_read(OUT_Y_H_A));
rawValues[Y] = ((int)LSM303_read(OUT_Z_L_A) << 8 ) | (LSM303_read(OUT_Z_H_A));
//
}

void getLSM303_mag(int * rawValues)
{
Wire.beginTransmission(LSM303_MAG);
Wire.write(OUT_X_H_M);
Wire.endTransmission();
Wire.requestFrom(LSM303_MAG, 6);
for (int i=0; i<3; i++)
rawValues = (Wire.read() << 8 ) | Wire.read();
}