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How to interpret the result from analogRead


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In the classical temperature reading example in CCS, the following code is used for reading and calculation:

 

    ADC10CTL0 |= ENC + ADC10SC;             // Sampling and conversion start
   // oC = ((A10/1024)*1500mV)-986mV)*1/3.55mV = A10*423/1024 - 278
   temp = ADC10MEM;
   IntDegC = ((temp - 673) * 423) / 1024;

 

While in the sample code from Energia, the following line gave a substantially different forumla.. so I'm wondering there are differences between the two analog values read?

 

    values[j] = ((uint32_t)analogRead(TEMPSENSOR)*27069 - 18169625) *10 >> 16;

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