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quickr (development version)

  • Added initial matrix/linear algebra handler support from base R, using the same BLAS/LAPACK as R: %*%, t(), crossprod(), tcrossprod(), outer() (with FUN="*"), %o%, forwardsolve(), backsolve(), diag(), t(), chol(), chol2inv(), solve(), and qr.solve().

    The plan is to add more functions in the future (#77, #79 @mns-nordicals)

  • Added support for cbind() and rbind() for rank-0/1/2 inputs, with scalar recycling only and strict length checks for non-scalar inputs.

  • On macOS, quickr will use LLVM flang (flang-new) for compilation when available (e.g. brew install flang). This is optional and can be disabled with options(quickr.prefer_flang = FALSE).

  • Added OpenMP parallelization via declare(parallel())/declare(omp()) for for loops and sapply() calls.

  • Added support for throwing errors with stop(). (#86)

  • Added support for abs() in size expressions used by declare(type(...)) (e.g. declare(type(x = integer(abs(end - start) + 1L)))).

  • Improved for (... in <iterable>) lowering, including value iteration (for (v in x)) and support for rev() wrappers on supported iterables.

  • Added nested compilation scopes with local declaration emission, enabling block-scoped temporaries (Fortran 2008 block ... end block) and local closures (lowered to internal procedures under contains), including sapply() lowering with host association for captures and support for simplify = "array" for higher-rank outputs. Examples:

    • Block-scoped temporary for expression subscripting:

      out[1] <- ifelse((x > 0.0)[2, 3], 1.0, 0.0)

    • Local closure + sapply() lowering:

      f <- function(i) x[i] + 1.0
out <- sapply(seq_along(out), f)

    This lowering matches R’s “copy-on-modify" semantics: modifications to the variables from the parent scope trigger a copy in the local closure scope.

  • Added support for superassignment (<<-) inside local closures (lowered to internal procedures) to explicitly mutate variables in the enclosing quick function scope, including x[i] <<- ... subset targets. Example:

    apply_boundary_conditions <- function() {
  temp[1, ] <<- 0
  temp[nx, ] <<- 0
  temp[, 1] <<- 0
  temp[, ny] <<- 0
  NULL
}
apply_boundary_conditions()

  • Added support for array(data=..., dim=...) for shape construction in user code and tests.

  • Added extensive tests + snapshots for local closures, sapply(), block-scoped temporaries, and package compilation behavior (internal procedure name collisions).

  • Lowered the minimum supported R version to 4.3.0 and added a backport of declare() for R < 4.4.0 (#67).

  • Fixed [ subsetting scalars with both drop=TRUE and drop=FALSE, simplifying to Fortran scalars so subsetted scalars in reductions (e.g., min(m[1, 1], m[2, 1])) no longer emit minval on scalars (#64).

  • Fixed an issue where subsetting logical arrays could fail when compiling quick functions, e.g. (x > 0)[2, 3] (#68).

  • Fixed a crash when compiling chained / fall-through assignments like a <- b <- 1 (#60).

quickr 0.2.1

  • Added support for ! and unary - and + (#49, @mns-nordicals)

  • Functions can now return multiple arrays in a list(), optionally named (#49, @mns-nordicals).

  • Updates for changes in the R-devel C API (#61)

quickr 0.2.0

  • Internal utility r2f() print method now shows the generated c_bridge for translated subroutines.

  • Added support for nrow(), ncol() and dim() (#21, @mikmart).

  • Added support for runif() with integration to R's RNG (#22, #45).

  • Added support for while, repeat, break, next.

  • Added support for %% and %/%.

  • Added support for expression return values.

  • Fix passing a scalar (rank-0) arg to reduction intrinsics (min, max, prod, sum).

  • Fixed an issue where / might perform integer division if one of the operands is an integer type (#33, #41).

  • Fixed an issue with dll symbol registration when quick() is used in a package (#19).

  • Fixed segfault encountered on Windows with variable sized arrays.

  • Added workaround for cases where the compiler error message might not display correctly in RStudio.

  • Improved error message when using case-sensitive variable names (#18, #36, #39)

  • Added AGENTS.md and scripts/setup_codex.sh to enable the ChatGPT/Codex agent to run tests in a docker container configured without internet access.

quickr 0.1.0

  • Initial CRAN submission.