nwsrfsr 1.0.3

• Fix a segfault (memory not mapped) reached by the rsnwelev() example on the CRAN gcc build. The example passed zero-length talr/pxtemp vectors to the Fortran routine, which reads them as dimension(n_hrus), causing an out-of-bounds read. rsnwelev() now selects one parameter value per forcing zone and raises a clear R error when elev, talr or pxtemp are missing, and the example supplies the required parameters.
• Fix uninitialised-memory reads reported by valgrind in the Lag/K routines. pin7/fka7 compared an uninitialised dimension string (setup calls were disabled in the wrapper port) and flag7 read unwritten slots of its scratch array; all three are now initialised. Model output is unchanged.
• Fix two -Wlto-type-mismatch warnings reported by the CRAN LTO and gcc-ASAN builds. The SNOW-17 /SNUP19/ common block left its first member MFC implicitly typed (INTEGER) in aesc19 while it is REAL elsewhere, and /SNCO19/ carried an extra trailing TAPREV member in zero19 that the other units do not (in this port TAPREV is a subroutine argument, not a common member). Both are now declared consistently. Model output is unchanged.
• Declare the umemst dummy array as assumed-size (IARRAY(*)) instead of the legacy IARRAY(1), which made a gfortran -fcheck=all build abort with a spurious out-of-bounds error on the first real write. This lets the package run under Fortran runtime bounds checking. Model output is unchanged.
• Disable floating-point expression contraction so simulation results agree across platforms. Compilers may fuse a*b+c into a single-rounding fused multiply-add, and whether they do varies by compiler version and CPU; in this iterated single-precision model chain the one-ulp differences are amplified by snow model thresholds into visibly different simulations (macOS/arm64 vs Linux/x86-64 differed by up to a few hundred cfs at individual flow peaks over a 43 year run). A new configure script probes the Fortran compiler for -ffp-contract=off and applies it via a generated src/Makevars (Makevars.win sets it directly since Rtools is always gfortran). With contraction off, results agree across macOS, Linux, x86-64 and arm64 to within libm rounding, which totals ~1e-4 mm of runoff over four decades. Model output changes very slightly on platforms that previously contracted.

nwsrfsr 1.0.2

• Fix installation failure under parallel make (make -j) by declaring the missing Fortran module dependencies (sorting.o: types.o and sac_snow.o: utilities.o) in src/Makevars and src/Makevars.win.

nwsrfsr 1.0.0

• Initial CRAN release
• Low-level Fortran wrappers: sac_snow(), uh(), lagk(), chanloss(), consuse(), fa_nwrfc()
• High-level orchestration: nwsrfs_run(), load_example(), update_pars()
• AdjustQ preprocessing: adjustq(), adjustq_load_example()
• Bundled example data for NRKW1 and SFLN2 stations