annotate R/rdyncall/src/rpack.c @ 66:7a61dd082341 default tip

pydc: - fix double free triggered by capsule destructor, when freeing pydc and callback objects, manually
author Tassilo Philipp
date Fri, 24 May 2024 18:16:29 +0200
parents 0cfcc391201f
children
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1 /** ===========================================================================
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2 ** R-Package: rdyncall
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3 ** File: src/rpack.c
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4 ** Description: (un-)packing of C structure data
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5 ** TODO
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6 ** - support for bitfields
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7 **/
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8
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9 // #define USE_RINTERNALS
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10 #include <Rinternals.h>
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11 #include <string.h>
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12 #include <stddef.h>
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13 #include "rdyncall_signature.h"
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14 /** ---------------------------------------------------------------------------
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15 ** C-Function: r_dataptr
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16 ** Description: retrieve the 'data' pointer on an R expression.
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17 ** R-Calling Convention: .Call
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18 **
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19 **/
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20
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21 static char* r_dataptr(SEXP x, SEXP off, size_t element_size)
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22 {
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23 if ( LENGTH(off) == 0 ) error("missing offset");
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24 char* p = NULL;
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25 ptrdiff_t o = INTEGER(off)[0], s = 0;
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26
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27 switch(TYPEOF(x))
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28 {
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29 case CHARSXP: p = (char*) CHAR(x); s = LENGTH(x)*sizeof(char); break;
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30 case LGLSXP: p = (char*) LOGICAL(x); s = LENGTH(x)*sizeof(Rboolean); break;
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31 case INTSXP: p = (char*) INTEGER(x); s = LENGTH(x)*sizeof(int); break;
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32 case REALSXP: p = (char*) REAL(x); s = LENGTH(x)*sizeof(double); break;
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33 case CPLXSXP: p = (char*) COMPLEX(x); s = LENGTH(x)*sizeof(Rcomplex); break;
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34 case STRSXP: p = (char*) CHAR( STRING_ELT(x,0) ); s = strlen(p)*sizeof(char); break;
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35 case RAWSXP: p = (char*) RAW(x); s = LENGTH(x)*sizeof(char); break;
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36 case EXTPTRSXP: return (char*) R_ExternalPtrAddr(x) + o; break;
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37 default: error("invalid object type"); break;
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38 }
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39 if (p == NULL) error("NULL address pointer");
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40 if (o < 0 || o+element_size > s) error("offset %d is out-of-bounds of the R object (max size %d)", o, s);
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41 return p + o;
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42 }
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43
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44
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45
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46 /** ---------------------------------------------------------------------------
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47 ** C-Function: r_pack
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48 ** Description: pack R data type into a C data type
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49 ** R-Calling Convention: .Call
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50 **
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51 **/
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52 SEXP r_pack(SEXP ptr_x, SEXP offset, SEXP sig_x, SEXP value_x)
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53 {
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54 int type_of = TYPEOF(value_x);
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55 const char* sig = CHAR(STRING_ELT(sig_x,0) );
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56 switch(sig[0])
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57 {
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58 case DC_SIGCHAR_BOOL:
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59 {
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60 int* Bp = (int*) r_dataptr(ptr_x, offset, sizeof(Rboolean));
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61 switch(type_of)
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62 {
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63 case LGLSXP: *Bp = (int) LOGICAL(value_x)[0]; break;
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64 case INTSXP: *Bp = (int) ( INTEGER(value_x)[0] == 0) ? 0 : 1; break;
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65 case REALSXP: *Bp = (int) ( REAL(value_x)[0] == 0.0) ? 0 : 1; break;
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66 case RAWSXP: *Bp = (int) ( RAW(value_x)[0] == 0) ? 0 : 1; break;
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67 default: error("value mismatch with 'B' pack type");
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68 }
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69 }
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70 break;
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71 case DC_SIGCHAR_CHAR:
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72 {
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73 char* cp = (char*) r_dataptr(ptr_x, offset, sizeof(char));
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74 switch(type_of)
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75 {
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76 case LGLSXP: *cp = (char) LOGICAL(value_x)[0]; break;
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77 case INTSXP: *cp = (char) INTEGER(value_x)[0]; break;
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78 case REALSXP: *cp = (char) REAL(value_x)[0]; break;
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79 case RAWSXP: *cp = (char) RAW(value_x)[0]; break;
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80 default: error("value mismatch with 'c' pack type");
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81 }
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82 }
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83 break;
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84 case DC_SIGCHAR_UCHAR:
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85 {
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86 unsigned char* cp = (unsigned char*) r_dataptr(ptr_x,offset,sizeof(unsigned char));
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87 switch(type_of)
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88 {
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89 case LGLSXP: *cp = (unsigned char) LOGICAL(value_x)[0]; break;
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90 case INTSXP: *cp = (unsigned char) INTEGER(value_x)[0]; break;
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91 case REALSXP: *cp = (unsigned char) REAL(value_x)[0]; break;
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92 case RAWSXP: *cp = (unsigned char) RAW(value_x)[0]; break;
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93 default: error("value mismatch with 'C' pack type");
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94 }
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95 }
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96 break;
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97 case DC_SIGCHAR_SHORT:
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98 {
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99 short* sp = (short*) r_dataptr(ptr_x,offset,sizeof(short));
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100 switch(type_of)
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101 {
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102 case LGLSXP: *sp = (short) LOGICAL(value_x)[0]; break;
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103 case INTSXP: *sp = (short) INTEGER(value_x)[0]; break;
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104 case REALSXP: *sp = (short) REAL(value_x)[0]; break;
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105 case RAWSXP: *sp = (short) RAW(value_x)[0]; break;
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106 default: error("value mismatch with 's' pack type");
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107 }
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108 }
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109 break;
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110 case DC_SIGCHAR_USHORT:
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111 {
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112 unsigned short* sp = (unsigned short*) r_dataptr(ptr_x,offset,sizeof(unsigned short));
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113 switch(type_of)
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114 {
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115 case LGLSXP: *sp = (unsigned short) LOGICAL(value_x)[0]; break;
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116 case INTSXP: *sp = (unsigned short) INTEGER(value_x)[0]; break;
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117 case REALSXP: *sp = (unsigned short) REAL(value_x)[0]; break;
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118 case RAWSXP: *sp = (unsigned short) RAW(value_x)[0]; break;
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119 default: error("value mismatch with 'S' pack type");
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120 }
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121 }
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122 break;
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123 case DC_SIGCHAR_INT:
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124 {
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125 int* ip = (int*) r_dataptr(ptr_x,offset,sizeof(int));
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126 switch(type_of)
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127 {
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128 case LGLSXP: *ip = (int) LOGICAL(value_x)[0]; break;
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129 case INTSXP: *ip = (int) INTEGER(value_x)[0]; break;
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130 case REALSXP: *ip = (int) REAL(value_x)[0]; break;
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131 case RAWSXP: *ip = (int) RAW(value_x)[0]; break;
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132 default: error("value mismatch with 'i' pack type");
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133 }
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134 }
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135 break;
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136 case DC_SIGCHAR_UINT:
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137 {
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138 unsigned int* ip = (unsigned int*) r_dataptr(ptr_x,offset,sizeof(unsigned int));
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139 switch(type_of)
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140 {
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141 case LGLSXP: *ip = (unsigned int) LOGICAL(value_x)[0]; break;
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142 case INTSXP: *ip = (unsigned int) INTEGER(value_x)[0]; break;
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143 case REALSXP: *ip = (unsigned int) REAL(value_x)[0]; break;
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144 case RAWSXP: *ip = (unsigned int) RAW(value_x)[0]; break;
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145 default: error("value mismatch with 'I' pack type");
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146 }
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147 }
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148 break;
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149 case DC_SIGCHAR_LONG:
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150 {
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151 long* ip = (long*) r_dataptr(ptr_x,offset,sizeof(long));
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152 switch(type_of)
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153 {
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154 case LGLSXP: *ip = (long) LOGICAL(value_x)[0]; break;
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155 case INTSXP: *ip = (long) INTEGER(value_x)[0]; break;
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156 case REALSXP: *ip = (long) REAL(value_x)[0]; break;
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157 case RAWSXP: *ip = (long) RAW(value_x)[0]; break;
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158 default: error("value mismatch with 'j' pack type");
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159 }
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160 }
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161 break;
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162 case DC_SIGCHAR_ULONG:
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163 {
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164 unsigned long* ip = (unsigned long*) r_dataptr(ptr_x,offset,sizeof(unsigned long));
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165 switch(type_of)
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166 {
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167 case LGLSXP: *ip = (unsigned long) LOGICAL(value_x)[0]; break;
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168 case INTSXP: *ip = (unsigned long) INTEGER(value_x)[0]; break;
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169 case REALSXP: *ip = (unsigned long) REAL(value_x)[0]; break;
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170 case RAWSXP: *ip = (unsigned long) RAW(value_x)[0]; break;
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171 default: error("value mismatch with 'J' pack type");
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172 }
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173 }
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174 break;
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175 case DC_SIGCHAR_LONGLONG:
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parents:
diff changeset
176 {
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parents:
diff changeset
177 long long* Lp = (long long*) r_dataptr(ptr_x,offset,sizeof(long long));
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parents:
diff changeset
178 switch(type_of)
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diff changeset
179 {
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diff changeset
180 case LGLSXP: *Lp = (long long) LOGICAL(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
181 case INTSXP: *Lp = (long long) INTEGER(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
182 case REALSXP: *Lp = (long long) REAL(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
183 case RAWSXP: *Lp = (long long) RAW(value_x)[0]; break;
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parents:
diff changeset
184 default: error("value mismatch with 'l' pack type");
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parents:
diff changeset
185 }
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Daniel Adler
parents:
diff changeset
186 }
0cfcc391201f initial from svn dyncall-1745
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diff changeset
187 break;
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parents:
diff changeset
188 case DC_SIGCHAR_ULONGLONG:
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diff changeset
189 {
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diff changeset
190 unsigned long long* Lp = (unsigned long long*) r_dataptr(ptr_x,offset,sizeof(unsigned long long));
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parents:
diff changeset
191 switch(type_of)
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diff changeset
192 {
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diff changeset
193 case LGLSXP: *Lp = (unsigned long long) LOGICAL(value_x)[0]; break;
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parents:
diff changeset
194 case INTSXP: *Lp = (unsigned long long) INTEGER(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
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diff changeset
195 case REALSXP: *Lp = (unsigned long long) REAL(value_x)[0]; break;
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diff changeset
196 case RAWSXP: *Lp = (unsigned long long) RAW(value_x)[0]; break;
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diff changeset
197 default: error("value mismatch with 'L' pack type");
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diff changeset
198 }
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diff changeset
199 }
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diff changeset
200 break;
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diff changeset
201 case DC_SIGCHAR_FLOAT:
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diff changeset
202 {
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diff changeset
203 float* fp = (float*) r_dataptr(ptr_x,offset,sizeof(float));
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parents:
diff changeset
204 switch(type_of)
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parents:
diff changeset
205 {
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diff changeset
206 case LGLSXP: *fp = (float) LOGICAL(value_x)[0]; break;
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parents:
diff changeset
207 case INTSXP: *fp = (float) INTEGER(value_x)[0]; break;
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diff changeset
208 case REALSXP: *fp = (float) REAL(value_x)[0]; break;
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parents:
diff changeset
209 case RAWSXP: *fp = (float) RAW(value_x)[0]; break;
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diff changeset
210 default: error("value mismatch with 'f' pack type");
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parents:
diff changeset
211 }
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
212 }
0cfcc391201f initial from svn dyncall-1745
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diff changeset
213 break;
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parents:
diff changeset
214 case DC_SIGCHAR_DOUBLE:
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parents:
diff changeset
215 {
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parents:
diff changeset
216 double* dp = (double*) r_dataptr(ptr_x,offset,sizeof(double));
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
217 switch(type_of)
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parents:
diff changeset
218 {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
219 case LGLSXP: *dp = (double) LOGICAL(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
220 case INTSXP: *dp = (double) INTEGER(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
221 case REALSXP: *dp = (double) REAL(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
222 case RAWSXP: *dp = (double) RAW(value_x)[0]; break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
223 default: error("value mismatch with 'd' pack type");
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
224 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
225 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
226 break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
227 case DC_SIGCHAR_POINTER:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
228 case '*':
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
229 {
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
230 void** pp = (void**) r_dataptr(ptr_x,offset,sizeof(void*));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
231 switch(type_of)
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
232 {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
233 case NILSXP: *pp = (void*) 0; break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
234 case CHARSXP: *pp = (void*) CHAR(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
235 case LGLSXP: *pp = (void*) LOGICAL(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
236 case INTSXP: *pp = (void*) INTEGER(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
237 case REALSXP: *pp = (void*) REAL(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
238 case CPLXSXP: *pp = (void*) COMPLEX(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
239 case STRSXP: *pp = (void*) CHAR( STRING_ELT(value_x,0) ); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
240 case EXTPTRSXP:*pp = (void*) R_ExternalPtrAddr(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
241 case RAWSXP: *pp = (void*) RAW(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
242 default: error("value type mismatch with 'p' pack type");
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
243 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
244 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
245 break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
246 case DC_SIGCHAR_STRING:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
247 {
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
248 char** Sp = (char**) r_dataptr(ptr_x,offset,sizeof(char*));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
249 switch(type_of)
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
250 {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
251 case NILSXP: *Sp = (char*) NULL; break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
252 case CHARSXP: *Sp = (char*) CHAR(value_x); break;
0cfcc391201f initial from svn dyncall-1745
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parents:
diff changeset
253 case STRSXP: *Sp = (char*) CHAR( STRING_ELT(value_x,0) ); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
254 case EXTPTRSXP:*Sp = (char*) R_ExternalPtrAddr(value_x); break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
255 default: error("value type mismatch with 'Z' pack type");
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
256 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
257 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
258 break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
259 case DC_SIGCHAR_SEXP:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
260 {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
261 SEXP* px = (SEXP*) r_dataptr(ptr_x,offset,sizeof(SEXP*));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
262 *px = value_x;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
263 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
264 break;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
265 default: error("invalid signature");
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
266 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
267 return R_NilValue;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
268 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
269
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
270 /** ---------------------------------------------------------------------------
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
271 ** C-Function: r_unpack
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
272 ** Description: unpack elements from C-like structures to R values.
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Daniel Adler
parents:
diff changeset
273 ** R-Calling Convention: .Call
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
274 **
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
275 **/
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
276 SEXP r_unpack(SEXP ptr_x, SEXP offset, SEXP sig_x)
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
277 {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
278 char* ptr = NULL;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
279 const char* sig = CHAR(STRING_ELT(sig_x,0) );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
280 switch(sig[0])
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
281 {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
282 case DC_SIGCHAR_BOOL:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
283 ptr = r_dataptr(ptr_x,offset,sizeof(Rboolean));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
284 return ScalarLogical( ((int*)ptr)[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
285 case DC_SIGCHAR_CHAR:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
286 ptr = r_dataptr(ptr_x,offset,sizeof(char));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
287 return ScalarInteger( ( (char*)ptr)[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
288 case DC_SIGCHAR_UCHAR:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
289 ptr = r_dataptr(ptr_x,offset,sizeof(unsigned char));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
290 return ScalarInteger( ( (unsigned char*)ptr)[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
291 case DC_SIGCHAR_SHORT:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
292 ptr = r_dataptr(ptr_x,offset,sizeof(short));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
293 return ScalarInteger( ( (short*)ptr)[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
294 case DC_SIGCHAR_USHORT:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
295 ptr = r_dataptr(ptr_x,offset,sizeof(unsigned short));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
296 return ScalarInteger( ( (unsigned short*)ptr)[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
297 case DC_SIGCHAR_INT:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
298 ptr = r_dataptr(ptr_x,offset,sizeof(int));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
299 return ScalarInteger( ( (int*)ptr )[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
300 case DC_SIGCHAR_UINT:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
301 ptr = r_dataptr(ptr_x,offset,sizeof(unsigned int));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
302 return ScalarReal( (double) ( (unsigned int*)ptr )[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
303 case DC_SIGCHAR_LONG:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
304 ptr = r_dataptr(ptr_x,offset,sizeof(long));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
305 return ScalarReal( (double) ( (long*)ptr )[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
306 case DC_SIGCHAR_ULONG:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
307 ptr = r_dataptr(ptr_x,offset,sizeof(unsigned long));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
308 return ScalarReal( (double) ( (unsigned long*) ptr )[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
309 case DC_SIGCHAR_FLOAT:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
310 ptr = r_dataptr(ptr_x,offset,sizeof(float));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
311 return ScalarReal( (double) ( (float*) ptr )[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
312 case DC_SIGCHAR_DOUBLE:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
313 ptr = r_dataptr(ptr_x,offset,sizeof(double));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
314 return ScalarReal( ((double*)ptr)[0] );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
315 case DC_SIGCHAR_LONGLONG:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
316 ptr = r_dataptr(ptr_x,offset,sizeof(long long));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
317 return ScalarReal( (double) ( ((long long*)ptr)[0] ) );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
318 case DC_SIGCHAR_ULONGLONG:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
319 ptr = r_dataptr(ptr_x,offset,sizeof(unsigned long long));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
320 return ScalarReal( (double) ( ((unsigned long long*)ptr)[0] ) );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
321 case '*':
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
322 case DC_SIGCHAR_POINTER:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
323 ptr = r_dataptr(ptr_x,offset,sizeof(void*));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
324 return R_MakeExternalPtr( ((void**)ptr)[0] , R_NilValue, R_NilValue );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
325 case DC_SIGCHAR_STRING: {
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
326 ptr = r_dataptr(ptr_x,offset,sizeof(char*));
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
327 char* s = ( (char**) ptr )[0];
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
328 if (s == NULL) return R_MakeExternalPtr( 0, R_NilValue, R_NilValue );
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
329 return mkString(s);
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
330 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
331 case DC_SIGCHAR_SEXP:
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
332 return (SEXP) ptr;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
333 default: error("invalid signature");
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
334 }
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
335 return R_NilValue;
0cfcc391201f initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
336 }