kopia lustrzana https://github.com/SP8EBC/ParaTNC
52 wiersze
1.1 KiB
C
52 wiersze
1.1 KiB
C
/*
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* float_to_string.c
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*
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* Created on: May 12, 2021
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* Author: mateusz
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*/
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#include "float_to_string.h"
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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void float_to_string(float in, char * out, uint8_t ln, int8_t precision, int8_t integer_ln) {
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int32_t integer_part = 0, decimal_part = 0;
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float decimal_in_float = 0.0f;
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integer_part = (int32_t)in;
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// decimal part stored as float
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decimal_in_float = in - integer_part;
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// calcaulating decimal precision multiplier
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precision = pow(10, precision);
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// moving decimal point according to precision required by the caller
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decimal_in_float *= precision;
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// converting decimal part into integer variable
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decimal_part = (int32_t) decimal_in_float;
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// clearing output
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memset (out, 0x00, ln);
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if (integer_ln == 3) {
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snprintf(out, ln, "%03ld.%02ld", integer_part, decimal_part);
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}
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else if (integer_ln == 4) {
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snprintf(out, ln, "%04ld.%02ld", integer_part, decimal_part);
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}
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else if (integer_ln == 5) {
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snprintf(out, ln, "%05ld.%02ld", integer_part, decimal_part);
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}
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else {
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snprintf(out, ln, "%ld.%02ld", integer_part, decimal_part);
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}
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}
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