• using R Under development (unstable) (2026-08-12 r90394)
• using platform: x86_64-pc-linux-gnu
• R was compiled by     gcc-16 (Debian 16.1.0-3) 16.1.0     GNU Fortran (Debian 16.1.0-3) 16.1.0
• running under: Debian GNU/Linux forky/sid
• using session charset: UTF-8 * current time: 2026-08-13 18:07:35 UTC
• checking for file ‘sparsediff/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘sparsediff’ version ‘0.4.0’
• package encoding: UTF-8
• checking CRAN incoming feasibility ... [1s/2s] OK
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
• checking for executable files ... OK
• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking serialization versions ... OK
• checking whether package ‘sparsediff’ can be installed ... OK See the install log for details.
• used C compiler: ‘gcc-16 (Debian 16.1.0-3) 16.1.0’
• used C++ compiler: ‘g++-16 (Debian 16.1.0-3) 16.1.0’
• checking package directory ... OK
• checking for future file timestamps ... OK
• checking ‘build’ directory ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking code files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... [0s/0s] OK
• checking whether the package can be loaded with stated dependencies ... [0s/0s] OK
• checking whether the package can be unloaded cleanly ... [0s/0s] OK
• checking whether the namespace can be loaded with stated dependencies ... [0s/0s] OK
• checking whether the namespace can be unloaded cleanly ... [0s/0s] OK
• checking loading without being on the library search path ... [0s/0s] OK
• checking use of S3 registration ... OK
• checking dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [3s/4s] OK
• checking Rd files ... [0s/0s] OK
• checking Rd metadata ... OK
• checking Rd line widths ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... INFO Exported functions without usage information:   sd_add sd_asinh sd_atanh sd_broadcast sd_constraint_forward   sd_convolve sd_cos sd_diag_mat sd_diag_vec sd_elementwise_mult   sd_entr sd_exp sd_gradient sd_hessian_sparsity sd_hessian_values   sd_hstack sd_index sd_init_derivatives sd_init_hessian_coo   sd_init_jacobian sd_init_jacobian_coo sd_jacobian_sparsity   sd_jacobian_values sd_left_matmul sd_left_matmul_dense sd_log   sd_logistic sd_matmul sd_neg sd_normal_cdf sd_objective_forward   sd_parameter sd_power sd_problem sd_prod sd_prod_axis_one   sd_prod_axis_zero sd_promote sd_quad_form sd_quad_over_lin   sd_register_params sd_rel_entr sd_rel_entr_first_scalar   sd_rel_entr_second_scalar sd_reshape sd_right_matmul   sd_right_matmul_dense sd_scalar_mult sd_sin sd_sinh sd_sum sd_tan   sd_tanh sd_trace sd_transpose sd_update_params sd_upper_tri   sd_variable sd_vector_mult sd_vstack sd_xexp
• checking Rd \usage sections ... OK
• checking Rd contents ... NOTE Rd files without \usage:   ‘sparsediff-affine.Rd’ ‘sparsediff-bivariate.Rd’   ‘sparsediff-elementwise.Rd’ ‘sparsediff-leaves.Rd’   ‘sparsediff-matrix.Rd’ ‘sparsediff-oracle.Rd’ ‘sparsediff-problem.Rd’   ‘sparsediff-reduction.Rd’ \arguments should not be documented without \usage.
• checking for unstated dependencies in examples ... OK
• checking line endings in shell scripts ... OK
• checking line endings in C/C++/Fortran sources/headers ... OK
• checking line endings in Makefiles ... OK
• checking compilation flags in Makevars ... OK
• checking for GNU extensions in Makefiles ... INFO GNU make is a SystemRequirements.
• checking for portable use of $(BLAS_LIBS) and $(LAPACK_LIBS) ... OK
• checking use of PKG_*FLAGS in Makefiles ... OK
• checking use of SHLIB_OPENMP_*FLAGS in Makefiles ... OK
• checking pragmas in C/C++ headers and code ... OK
• checking compilation flags used ... OK
• checking compiled code ... OK
• checking installed files from ‘inst/doc’ ... OK
• checking files in ‘vignettes’ ... OK
• checking examples ... [0s/1s] OK
• checking for unstated dependencies in vignettes ... OK
• checking package vignettes ... OK
• checking re-building of vignette outputs ... [2s/2s] OK
• checking PDF version of manual ... [4s/6s] OK
• checking HTML version of manual ... [1s/1s] OK
• checking for non-standard things in the check directory ... OK
• DONE

Status: 1 NOTE