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Language/OS - Multiplatform Resource Library
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LANGUAGE OS.iso
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lisp
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elk-2_0.lha
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elk-2.0
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src
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char.c
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C/C++ Source or Header
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1992-03-17
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3KB
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114 lines
#include <ctype.h>
#include "scheme.h"
Object Make_Char (c) register c; {
Object ch;
SET(ch, T_Character, (unsigned char)c);
return ch;
}
Object P_Charp (c) Object c; {
return TYPE(c) == T_Character ? True : False;
}
Object P_Char_To_Integer (c) Object c; {
Check_Type (c, T_Character);
return Make_Integer (CHAR(c));
}
Object P_Integer_To_Char (n) Object n; {
register i;
if ((i = Get_Integer (n)) < 0 || i > 255)
Range_Error (n);
return Make_Char (i);
}
Object P_Char_Upper_Case (c) Object c; {
Check_Type (c, T_Character);
return isupper (CHAR(c)) ? True : False;
}
Object P_Char_Lower_Case (c) Object c; {
Check_Type (c, T_Character);
return islower (CHAR(c)) ? True : False;
}
Object P_Char_Alphabetic (c) Object c; {
Check_Type (c, T_Character);
return isalpha (CHAR(c)) ? True : False;
}
Object P_Char_Numeric (c) Object c; {
Check_Type (c, T_Character);
return isdigit (CHAR(c)) ? True : False;
}
Object P_Char_Whitespace (c) Object c; {
register x;
Check_Type (c, T_Character);
x = CHAR(c);
return Whitespace (x) ? True : False;
}
Object P_Char_Upcase (c) Object c; {
Check_Type (c, T_Character);
return islower (CHAR(c)) ? Make_Char (toupper (CHAR(c))) : c;
}
Object P_Char_Downcase (c) Object c; {
Check_Type (c, T_Character);
return isupper (CHAR(c)) ? Make_Char (tolower (CHAR(c))) : c;
}
General_Chrcmp (c1, c2, ci) Object c1, c2; register ci; {
Check_Type (c1, T_Character);
Check_Type (c2, T_Character);
if (ci)
return Char_Map[CHAR(c1)] - Char_Map[CHAR(c2)];
return CHAR(c1) - CHAR(c2);
}
Object P_Chr_Eq (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 0) ? False : True;
}
Object P_Chr_Less (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 0) < 0 ? True : False;
}
Object P_Chr_Greater (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 0) > 0 ? True : False;
}
Object P_Chr_Eq_Less (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 0) <= 0 ? True : False;
}
Object P_Chr_Eq_Greater (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 0) >= 0 ? True : False;
}
Object P_Chr_CI_Eq (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 1) ? False : True;
}
Object P_Chr_CI_Less (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 1) < 0 ? True : False;
}
Object P_Chr_CI_Greater (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 1) > 0 ? True : False;
}
Object P_Chr_CI_Eq_Less (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 1) <= 0 ? True : False;
}
Object P_Chr_CI_Eq_Greater (c1, c2) Object c1, c2; {
return General_Chrcmp (c1, c2, 1) >= 0 ? True : False;
}