Mikroelektronika MIKROE-742 데이터 시트

490

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

procedure FloatToStr(input : real; var output : array[23] of char);

- 

3

if input number is NaN 

- 

2

if input number is -INF 

- 

1

if input number is +INF 

- 

0

if conversion was successful 

Converts a floating point number to a string.

Parameters : 

- 

input

: floating point number to be converted 

- 

output

: destination string 

The output string is left justified and null terminated after the last digit.

Note: Given floating point number will be truncated to 7 most significant digits
before conversion.

Nothing.

var ff1, ff2, ff3 : real;

txt : 

array[23] of char;

...  
ff1 := -374.2;

ff2 := 123.456789;
ff3 := 0.000001234;

FloatToStr(ff1, txt);  // txt is "-374.2"
FloatToStr(ff2, txt);  // txt is "123.4567"

FloatToStr(ff3, txt);  // txt is "1.234e-6"

function Dec2Bcd(decnum : byte) : byte;

Converted BCD value.

Converts input number to its appropriate BCD representation. 

Parameters : 

- 

decnum

: number to be converted 

Nothing.

var a, b : byte;
...

a := 22;
b := Dec2Bcd(a); // b equals 34