diff options
| author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2016-02-01 13:26:22 +0100 |
|---|---|---|
| committer | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2016-02-02 17:06:38 +0100 |
| commit | d2f6f1845b29cf98290b7113c69d2d7b6d8eb02b (patch) | |
| tree | 6e7ac859eb9c4bd1fba80e54877ca410a757b0c8 | |
| parent | a0dbfd89fa97739da795b4425c13d90432f408c9 (diff) | |
pcu: Add bitvec_write_field_lh
While the bitvec functions from libosmocore support LH encoding, the
C++ wrapper does not.
Add a bitvec_write_field_lh function that is similar to
bitvec_write_field, but writes L and H instead of ZERO and ONE.
Sponsored-by: On-Waves ehf
| -rw-r--r-- | src/bitvector.cpp | 18 | ||||
| -rw-r--r-- | src/bitvector.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/bitvector.cpp b/src/bitvector.cpp index 43feebc5..10284073 100644 --- a/src/bitvector.cpp +++ b/src/bitvector.cpp @@ -117,3 +117,21 @@ int bitvec_write_field(struct bitvec *bv, unsigned& write_index, uint64_t val, u write_index += len; return 0; } + +int bitvec_write_field_lh(struct bitvec *bv, unsigned& write_index, + uint64_t val, unsigned len) +{ + unsigned int i; + int rc; + bv->cur_bit = write_index; + for (i = 0; i < len; i++) { + bit_value bit = L; + if (val & ((uint64_t)1 << (len - i - 1))) + bit = H; + rc = bitvec_set_bit(bv, bit); + if (rc) + return rc; + } + write_index += len; + return 0; +} diff --git a/src/bitvector.h b/src/bitvector.h index 36bdbaba..b14d2040 100644 --- a/src/bitvector.h +++ b/src/bitvector.h @@ -39,6 +39,7 @@ unsigned int bitvec_pack(struct bitvec *bv, uint8_t *buffer); unsigned int bitvec_unpack(struct bitvec *bv, uint8_t *buffer); uint64_t bitvec_read_field(struct bitvec *bv, unsigned& read_index, unsigned len); int bitvec_write_field(struct bitvec *bv, unsigned& write_index, uint64_t val, unsigned len); +int bitvec_write_field_lh(struct bitvec *bv, unsigned& write_index, uint64_t val, unsigned len); /*! }@ */ |