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https://github.com/CovidBraceletPrj/CovidBracelet.git
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796cf0f089
- cleanup of sequence number utilites - dynamic calculation of nvs sectors for fs information - usage of buffer in ens_fs - check for max entry size (page size) - usage of interal entry size, which is always the next larger power of 2 to a given entry size
28 lines
738 B
C
28 lines
738 B
C
#include "sequencenumber.h"
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#define SN_MASK 0xffffff
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/**
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* Mask a given sequence number to get rid of MSB.
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*/
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#define GET_MASKED_SN(x) (x & SN_MASK)
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int sn_equal(record_sequence_number_t a, record_sequence_number_t b) {
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return GET_MASKED_SN(a) == GET_MASKED_SN(b);
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}
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record_sequence_number_t sn_increment(record_sequence_number_t sn) {
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return GET_MASKED_SN(++sn);
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}
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record_sequence_number_t sn_increment_by(record_sequence_number_t sn, uint32_t amount) {
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return GET_MASKED_SN((sn + amount));
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}
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record_sequence_number_t sn_get_middle_sn(record_sequence_number_t older, record_sequence_number_t newer) {
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if (older < newer) {
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return (older + newer) / 2;
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}
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// TODO lome: cover case for older > newer
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} |