Found the following significant warnings:
  binary.c:222:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:264:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:305:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:310:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:352:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:357:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:427:23: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:451:23: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:521:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:526:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:568:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:573:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:614:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:619:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:661:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:666:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:707:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  binary.c:712:3: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
  solve.c:121:68: warning: format specifies type 'int' but the argument has type 'R_xlen_t' (aka 'long') [-Wformat]
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/float.Rcheck/00install.out’ for details.
* used C compiler: ‘Debian clang version 17.0.5 (1)’
* used Fortran compiler: ‘Debian flang-new version 17.0.5 (1)’