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File: alloca.h
#ifndef R_MATRIX_ALLOCA_H #define R_MATRIX_ALLOCA_H /* MJ: alloca-using macros (currently opt-out, eventually opt-in) */ /* Copy and paste from Defn.h : */ /* 'alloca' is neither C99 nor POSIX */ #ifdef __GNUC__ /* This covers GNU, Clang and Intel compilers */ /* #undef needed in case some other header, e.g. malloc.h, already did this */ # undef alloca # define alloca(x) __builtin_alloca((x)) #else # ifdef HAVE_ALLOCA_H /* This covers native compilers on Solaris and AIX */ # include <alloca.h> # endif /* It might have been defined via some other standard header, e.g. stdlib.h */ # if !HAVE_DECL_ALLOCA extern void *alloca(size_t); # endif #endif #define AS_CHM_FR(x) \ M_sexp_as_cholmod_factor((CHM_FR) alloca(sizeof(cholmod_factor)), x) #define AS_CHM_SP(x) \ M_sexp_as_cholmod_sparse((CHM_SP) alloca(sizeof(cholmod_sparse)), x, \ (Rboolean) 1, (Rboolean) 0) #define AS_CHM_SP__(x) \ M_sexp_as_cholmod_sparse((CHM_SP) alloca(sizeof(cholmod_sparse)), x, \ (Rboolean) 0, (Rboolean) 0) #define AS_CHM_DN(x) \ M_sexp_as_cholmod_dense ((CHM_DN) alloca(sizeof(cholmod_dense )), x) #define N_AS_CHM_DN(x, m, n) \ M_numeric_as_cholmod_dense((CHM_DN) alloca(sizeof(cholmod_dense)), x, m, n) #endif /* R_MATRIX_ALLOCA_H */