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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

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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