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/* non standard functions */

/*-------------------------------------------------------------*/
/* warning : param is called several times. Use those functions with care.
  For example, they are not suitable for "netwib_c2_isalnum(c++)". */
#define netwib_c2_isalnum(c) ( netwib_c2_isalpha(c) || netwib_c2_isdigit(c) )
#define netwib_c2_isalpha(c) ( netwib_c2_islower(c) || netwib_c2_isupper(c) )
#define netwib_c2_isdigit(c) ( ((c)>='0') && ((c)<='9') )
#define netwib_c2_islower(c) ( ((c)>='a') && ((c)<='z') )
#define netwib_c2_isupper(c) ( ((c)>='A') && ((c)<='Z') )
#define netwib_c2_isxdigit(c) ( netwib_c2_isdigit(c) || ( ((c)>='a') && ((c)<='f') ) || ( ((c)>='A') && ((c)<='F') ) )
#define netwib_c2_isprint(c) ( (c)>=32 && (c)<=126 )
#define netwib_c2_isprint2(c) ( netwib_c2_isprint(c) || (c)=='\t' || (c)=='\r' || (c)=='\n' )
#define netwib_c2_isspace(c) ( (c)==' ' || (c)=='\t' || (c)=='\n' || (c)=='\r' || (c)=='\f' || (c)=='\v')

/*-------------------------------------------------------------*/
/* Warning : first 2 functions change the parameter */
#define netwib_c2_lower(c) if (netwib_c2_isupper(c)) { c += 'a' - 'A'; }
#define netwib_c2_upper(c) if (netwib_c2_islower(c)) { c -= 'a' - 'A'; }
/* Warning : param is called several times */
#define netwib_c2_lc(c) (netwib_c2_isupper(c)?((c)+'a'-'A'):(c))
#define netwib_c2_uc(c) (netwib_c2_islower(c)?((c)-'a'+'A'):(c))

/*-------------------------------------------------------------*/
/* byte extract from uint16, uint32 or uint64 */
#define netwib_c2_uint16_0(x) (netwib_byte)(((x)>>8)&0xFF)
#define netwib_c2_uint16_1(x) (netwib_byte)((x)&0xFF)
#define netwib_c2_uint32_0(x) (netwib_byte)(((x)>>24)&0xFF)
#define netwib_c2_uint32_1(x) (netwib_byte)(((x)>>16)&0xFF)
#define netwib_c2_uint32_2(x) (netwib_byte)(((x)>>8)&0xFF)
#define netwib_c2_uint32_3(x) (netwib_byte)((x)&0xFF)
#if NETWIB_INT64_FAKE == 0
 #define netwib_c2_uint64_0(x) (netwib_byte)(((x)>>56)&0xFF)
 #define netwib_c2_uint64_1(x) (netwib_byte)(((x)>>48)&0xFF)
 #define netwib_c2_uint64_2(x) (netwib_byte)(((x)>>40)&0xFF)
 #define netwib_c2_uint64_3(x) (netwib_byte)(((x)>>32)&0xFF)
 #define netwib_c2_uint64_4(x) (netwib_byte)(((x)>>24)&0xFF)
 #define netwib_c2_uint64_5(x) (netwib_byte)(((x)>>16)&0xFF)
 #define netwib_c2_uint64_6(x) (netwib_byte)(((x)>>8)&0xFF)
 #define netwib_c2_uint64_7(x) (netwib_byte)((x)&0xFF)
 #define netwib_c2_uint64_32high(x) (netwib_uint32)((x)>>32)
 #define netwib_c2_uint64_32low(x) (netwib_uint32)((x)&0xFFFFFFFFu)
#else
 #define netwib_c2_uint64_0(x) netwib_c2_uint32_0((x).high)
 #define netwib_c2_uint64_1(x) netwib_c2_uint32_1((x).high)
 #define netwib_c2_uint64_2(x) netwib_c2_uint32_2((x).high)
 #define netwib_c2_uint64_3(x) netwib_c2_uint32_3((x).high)
 #define netwib_c2_uint64_4(x) netwib_c2_uint32_0((x).low)
 #define netwib_c2_uint64_5(x) netwib_c2_uint32_1((x).low)
 #define netwib_c2_uint64_6(x) netwib_c2_uint32_2((x).low)
 #define netwib_c2_uint64_7(x) netwib_c2_uint32_3((x).low)
 #define netwib_c2_uint64_32high(x) ((x).high)
 #define netwib_c2_uint64_32low(x) ((x).low)
#endif

/*-------------------------------------------------------------*/
/* recomposition of uint16 or uint32 */
#define netwib_c2_uint16_2(a,b) (netwib_uint16)(((a)<<8)|(b))
#define netwib_c2_uint32_4(a,b,c,d) (netwib_uint32)(((a)<<24)|((b)<<16)|((c)<<8)|(d))
#if NETWIB_INT64_FAKE == 0
 #define netwib_c2_uint64_8(a,b,c,d,e,f,g,h) (netwib_uint64)((((netwib_uint64)(a))<<56)|(((netwib_uint64)(b))<<48)|(((netwib_uint64)(c))<<40)|(((netwib_uint64)(d))<<32)|(((netwib_uint64)(e))<<24)|(((netwib_uint64)(f))<<16)|(((netwib_uint64)(g))<<8)|((netwib_uint64)(h)))
 #define netwib_c2_uint64_set_8(x,a,b,c,d,e,f,g,h) x = netwib_c2_uint64_8(a,b,c,d,e,f,g,h)
 #define netwib_c2_uint64_set_32(x,a,b) x = (((netwib_uint64)(a)<<32)|(netwib_uint64)(b))
#else
 #define netwib_c2_uint64_set_8(x,a,b,c,d,e,f,g,h) (x).high = netwib_c2_uint32_4(a,b,c,d); (x).low = netwib_c2_uint32_4(e,f,g,h)
 #define netwib_c2_uint64_set_32(x,a,b) (x).high = (a); (x).low = (b);
#endif

/*-------------------------------------------------------------*/
/* 0->16 to '0'->'F' without error checking */
#define netwib_c2_16toc(x) (char)((x<=9)?('0'+x):('a'+x-10))
#define netwib_c2_16toC(x) (char)((x<=9)?('0'+x):('A'+x-10))
/* '0'->'F' to 0->16 without error checking */
#define netwib_c2_cto16(x) ((x>='0'&&x<='9')?(x-'0'):((x>='a'&&x<='f')?(10+x-'a'):(10+x-'A')))
/* 0->9 to '0'->'9' without error checking */
#define netwib_c2_9toc(x) (char)('0'+x)
/* '0'->'9' to 0->9 without error checking */
#define netwib_c2_cto9(x) (x-'0')

/*-------------------------------------------------------------*/
/* '0'->'F' to 0->16 with error checking */
#define netwib_c2_cto16_if(c,quartet) if (c >= '0' && c <= '9') { quartet = c - '0'; } else if (c >= 'a' && c <= 'f') { quartet = 10 + c - 'a'; } else if (c >= 'A' && c <= 'F') { quartet = 10 + c - 'A'; }
/* '0'->'9' to 0->9 with error checking */
#define netwib_c2_cto9_if(c,digit) if (c >= '0' && c <= '9') { digit = c - '0'; }





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