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96 #undef CAREFUL_ALIGNMENT
101 #define CAREFUL_ALIGNMENT 0
104 #ifndef CAREFUL_ALIGNMENT
105 #define CAREFUL_ALIGNMENT 1
108 #define CVAL(buf,pos) ((unsigned)(((const unsigned char *)(buf))[pos]))
109 #define CVAL_NC(buf,pos) (((unsigned char *)(buf))[pos])
110 #define PVAL(buf,pos) (CVAL(buf,pos))
111 #define SCVAL(buf,pos,val) (CVAL_NC(buf,pos) = (val))
114 #if CAREFUL_ALIGNMENT
116 #define SVAL(buf,pos) (PVAL(buf,pos)|PVAL(buf,(pos)+1)<<8)
117 #define IVAL(buf,pos) (SVAL(buf,pos)|SVAL(buf,(pos)+2)<<16)
118 #define SSVALX(buf,pos,val) (CVAL_NC(buf,pos)=(unsigned char)((val)&0xFF),CVAL_NC(buf,pos+1)=(unsigned char)((val)>>8))
119 #define SIVALX(buf,pos,val) (SSVALX(buf,pos,val&0xFFFF),SSVALX(buf,pos+2,val>>16))
120 #define SVALS(buf,pos) ((int16)SVAL(buf,pos))
121 #define IVALS(buf,pos) ((int32)IVAL(buf,pos))
122 #define SSVAL(buf,pos,val) SSVALX((buf),(pos),((uint16)(val)))
123 #define SIVAL(buf,pos,val) SIVALX((buf),(pos),((uint32)(val)))
124 #define SSVALS(buf,pos,val) SSVALX((buf),(pos),((int16)(val)))
125 #define SIVALS(buf,pos,val) SIVALX((buf),(pos),((int32)(val)))
137 #define SVAL(buf,pos) (*(const uint16 *)((const char *)(buf) + (pos)))
138 #define SVAL_NC(buf,pos) (*(uint16 *)((char *)(buf) + (pos)))
139 #define IVAL(buf,pos) (*(const uint32 *)((const char *)(buf) + (pos)))
140 #define IVAL_NC(buf,pos) (*(uint32 *)((char *)(buf) + (pos)))
141 #define SVALS(buf,pos) (*(const int16 *)((const char *)(buf) + (pos)))
142 #define SVALS_NC(buf,pos) (*(int16 *)((char *)(buf) + (pos)))
143 #define IVALS(buf,pos) (*(const int32 *)((const char *)(buf) + (pos)))
144 #define IVALS_NC(buf,pos) (*(int32 *)((char *)(buf) + (pos)))
147 #define SSVAL(buf,pos,val) SVAL_NC(buf,pos)=((uint16)(val))
148 #define SIVAL(buf,pos,val) IVAL_NC(buf,pos)=((uint32)(val))
149 #define SSVALS(buf,pos,val) SVALS_NC(buf,pos)=((int16)(val))
150 #define SIVALS(buf,pos,val) IVALS_NC(buf,pos)=((int32)(val))
155 #define SREV(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
156 #define IREV(x) ((SREV(x)<<16) | (SREV((x)>>16)))
158 #define RSVAL(buf,pos) SREV(SVAL(buf,pos))
159 #define RSVALS(buf,pos) SREV(SVALS(buf,pos))
160 #define RIVAL(buf,pos) IREV(IVAL(buf,pos))
161 #define RIVALS(buf,pos) IREV(IVALS(buf,pos))
162 #define RSSVAL(buf,pos,val) SSVAL(buf,pos,SREV(val))
163 #define RSSVALS(buf,pos,val) SSVALS(buf,pos,SREV(val))
164 #define RSIVAL(buf,pos,val) SIVAL(buf,pos,IREV(val))
165 #define RSIVALS(buf,pos,val) SIVALS(buf,pos,IREV(val))
168 #define ALIGN4(p,base) ((p) + ((4 - (PTR_DIFF((p), (base)) & 3)) & 3))
169 #define ALIGN2(p,base) ((p) + ((2 - (PTR_DIFF((p), (base)) & 1)) & 1))