MRTKLIB v0.5.2 Release Notes¶

Release date: 2026-03-10 Type: Code quality (style enforcement) Branch: chore/code-quality-braces-ternary

Overview¶

v0.5.2 is a code-quality release that enforces two style rules across the entire codebase (67 source files, +12,727 / -5,085 lines):

1. Mandatory braces on all control flow statements (if, for, while, else)
2. No nested or complex ternary operators

No functional or algorithmic changes. All 56/56 non-realtime tests pass with identical output.

Changes¶

Style — Mandatory braces (4,053 instances)¶

All single-statement if, for, while, and else blocks now use explicit {} braces, enforced by Clang-Tidy readability-braces-around-statements.

Before:

if (!ssat->vs) continue;
for (j=0;j<3;j++) rs[j+i*6]=0.0;

After:

if (!ssat->vs) {
    continue;
}
for (j = 0; j < 3; j++) {
    rs[j + i * 6] = 0.0;
}

Style — Nested ternary elimination (19 instances)¶

All nested ternary operators (a ? b ? c : d : e) converted to if-else chains or switch-case statements.

Before:

sys = (U1(p)==1)?SYS_GLO:((U1(p)==2)?SYS_GPS:((U1(p)==4)?SYS_SBS:SYS_NONE));

After:

if (U1(p) == 1) {
    sys = SYS_GLO;
} else if (U1(p) == 2) {
    sys = SYS_GPS;
} else if (U1(p) == 4) {
    sys = SYS_SBS;
} else {
    sys = SYS_NONE;
}

Three #define NT(opt) / NT_RTK(opt) macros with nested ternaries were replaced by static inline functions in mrtk_ppp.c, mrtk_ppp_ar.c, and mrtk_clas_osr.c.

Style — Complex ternary cleanup (8 instances)¶

Ternary operators with side-effect assignments in conditions or function calls in both branches were refactored to explicit if-else:

• strchr() assignments extracted from ternary conditions (mrtk_obs.c, mrtk_rinex.c)
• getbitu() conditional calls converted to if-else (mrtk_rcv_septentrio.c)
• LLI arithmetic ternaries expanded to explicit if blocks (mrtk_rcv_septentrio.c)
• strgettime() conditional calls converted to if-else (mrtk_rtksvr.c)
• NTRIP function-dispatch ternaries converted to if-else (mrtk_stream.c)
• Nested adr ternary with I8() call converted to if-else (mrtk_rcv_ublox.c)

Formatting¶

Changed lines formatted with git clang-format (Google style, 4-space indent, 120-column limit) to ensure consistent style on all modified code.

Scope¶

Excluded from scope¶

• src/core/tomlc99/ — Vendored third-party code (tomlc99, MIT license)
• apps/cssr2rtcm3/ — Unreleased tool, not yet on develop
• Header files (include/mrtklib/) — Not processed (no control-flow logic)

Tooling¶

Test Results¶

All 56/56 non-realtime tests pass, unchanged from v0.5.1.

Files changed¶

All 67 files under src/ and apps/ (excluding src/core/tomlc99/ and apps/cssr2rtcm3/):