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### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD INSTALL HEM
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* installing to library ‘/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library’
* installing *source* package ‘HEM’ ...
** this is package ‘HEM’ version ‘1.81.0’
** using staged installation
** libs
using C compiler: ‘Apple clang version 15.0.0 (clang-1500.1.0.2.5)’
using SDK: ‘MacOSX11.3.sdk’
clang -arch arm64 -std=gnu2x -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG   -I/opt/R/arm64/include    -fPIC  -falign-functions=64 -Wall -g -O2  -c hem.c -o hem.o
In file included from hem.c:17:
./random4f.h:126:18: error: unknown type name 'alpha'
double gammadist(alpha)
                 ^
./random4f.h:126:24: error: expected ';' after top level declarator
double gammadist(alpha)
                       ^
                       ;
./random4f.h:128:1: error: expected identifier or '('
{ double u0,x,y;
^
hem.c:980:44: warning: variable 'raccept' set but not used [-Wunused-but-set-variable]
        double temp, temp2, MHratio, U, old, new, raccept;
                                                  ^
hem.c:1079:44: warning: variable 'raccept' set but not used [-Wunused-but-set-variable]
        double temp, temp2, MHratio, U, old, new, raccept;
                                                  ^
hem.c:1390:12: warning: variable 'k' set but not used [-Wunused-but-set-variable]
        int i, j, k, m, n;
                  ^
hem.c:1593:16: warning: variable 'l' set but not used [-Wunused-but-set-variable]
  int i, j, k, l;
               ^
4 warnings and 3 errors generated.
make: *** [hem.o] Error 1
ERROR: compilation failed for package ‘HEM’
* removing ‘/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/HEM’