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  1. #include <stdio.h>
  2. #include <stdint.h>
  3.  
  4. #define INT_MAX   0x7fffffff
  5. #define SCALED_ADC_AT_ZERO_VOLTS (65536 * 390 / (390 + 10))
  6.  
  7. int32_t hv_volts_to_adc(float v)
  8. {
  9.     return (int32_t)(v * 65536 / 3.3 * 10 / (390 + 10)) +
  10.            (65536 * 390.0 / (390 + 10));
  11. }
  12.  
  13. int main(void) {
  14. 	// your code goes here
  15. 	uint32_t hvTargetAdcReal = hv_volts_to_adc(-55);
  16. 	printf("Before clamp=%u\n", hvTargetAdcReal);
  17.     	if (hvTargetAdcReal > INT_MAX)
  18.         {
  19.             hvTargetAdcReal = INT_MAX;
  20.         }
  21.         printf("INT_MAX=%u", INT_MAX);
  22.         printf("-INT_MAX=%u", -INT_MAX);
  23.     printf("After clamp=%u\n", hvTargetAdcReal);
  24. 	int32_t adcAtZero = SCALED_ADC_AT_ZERO_VOLTS;
  25. 	int32_t result = (adcAtZero - (int32_t)hvTargetAdcReal);
  26. 	int32_t result2 = (int32_t)(adcAtZero - hvTargetAdcReal);
  27.  
  28. 	return 0;
  29. }
  30.  
Success #stdin #stdout 0s 5280KB
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stdin
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Standard input is empty
stdout
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Before clamp=36591
INT_MAX=2147483647-INT_MAX=2147483649After clamp=36591
https://ideone.com/mz1qwv
language:
C (gcc 8.3)
created:
17 hours ago
visibility:
public

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