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Numlen.cpp
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Numlen.cpp
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// Returns the number of characters required to display a number in base 10. This is useful for converting numbers to text. It works for signed or unsigned byte, int and long. http://github.com/per1234/Numlen
#include "Numlen.h"
byte NumlenClass::numlen(int8_t input) {
byte isNegative = 0;
if (input < 0) {
isNegative = 1;
}
input = abs(input);
if (input > 99) {
return 3 + isNegative;
}
else if (input > 9) {
return 2 + isNegative;
}
return 1 + isNegative;
}
byte NumlenClass::numlen(uint8_t input) {
if (input > 99) {
return 3;
}
else if (input > 9) {
return 2;
}
return 1;
}
byte NumlenClass::numlen(int16_t input) {
byte isNegative = 0;
if (input < 0) {
isNegative = 1;
}
input = abs(input);
if (input > 9999) {
return 5 + isNegative;
}
else if (input > 999) {
return 4 + isNegative;
}
else if (input > 99) {
return 3 + isNegative;
}
else if (input > 9) {
return 2 + isNegative;
}
return 1 + isNegative;
}
byte NumlenClass::numlen(uint16_t input) {
if (input > 9999) {
return 5;
}
else if (input > 999) {
return 4;
}
else if (input > 99) {
return 3;
}
else if (input > 9) {
return 2;
}
return 1;
}
byte NumlenClass::numlen(int32_t input) {
byte isNegative = 0;
if (input < 0) {
isNegative = 1;
}
input = abs(input);
if (input > 999999999) {
return 10 + isNegative;
}
else if (input > 99999999) {
return 9 + isNegative;
}
else if (input > 9999999) {
return 8 + isNegative;
}
else if (input > 999999) {
return 7 + isNegative;
}
else if (input > 99999) {
return 6 + isNegative;
}
else if (input > 9999) {
return 5 + isNegative;
}
else if (input > 999) {
return 4 + isNegative;
}
else if (input > 99) {
return 3 + isNegative;
}
else if (input > 9) {
return 2 + isNegative;
}
return 1 + isNegative;
}
byte NumlenClass::numlen(uint32_t input) {
if (input > 999999999) {
return 10;
}
else if (input > 99999999) {
return 9;
}
else if (input > 9999999) {
return 8;
}
else if (input > 999999) {
return 7;
}
else if (input > 99999) {
return 6;
}
else if (input > 9999) {
return 5;
}
else if (input > 999) {
return 4;
}
else if (input > 99) {
return 3;
}
else if (input > 9) {
return 2;
}
return 1;
}
NumlenClass Numlen;