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annotate test/funcptr.d @ 270:d9d5d59873d8 trunk

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[svn r291] Fixed a bunch of the old Phobos tests to work with Tango. Branch statements now emit a new block after it. Fixed the _adSort runtime function had a bad signature. Added a missing dot prefix on compiler generated string tables for string switch. Fixed, PTRSIZE seems like it was wrong on 64bit, now it definitely gets set properly.
author lindquist
date Mon, 16 Jun 2008 16:01:19 +0200
parents 027b8d8b71ec
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
270
d9d5d59873d8 [svn r291] Fixed a bunch of the old Phobos tests to work with Tango.
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1 extern(C) int printf(char*, ...);
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2
1
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3 int return_six()
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4 {
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5 return 6;
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6 }
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7
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8 int add_int(int a, int b)
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9 {
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10 return a+b;
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11 }
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12
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13 int sub_int(int a, int b)
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14 {
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15 return a-b;
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16 }
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17
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18 alias int function(int,int) binfn_t;
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19
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20 int binop_int(binfn_t op, int a, int b)
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21 {
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22 return op(a,b);
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23 }
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24
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25 binfn_t get_binop_int(char op)
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26 {
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27 binfn_t fn;
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28 if (op == '+')
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29 fn = &add_int;
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30 else if (op == '-')
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31 fn = &sub_int;
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32 return fn;
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33 }
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34
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35 extern(C) float mul_float(float a, float b)
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36 {
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37 return a * b;
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38 }
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39
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40 void function_pointers()
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41 {
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42 int function() fn = &return_six;
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43 assert(fn() == 6);
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44
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45 binfn_t binfn = &add_int;
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46 assert(binfn(4,1045) == 1049);
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47
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48 assert(binop_int(binfn, 10,656) == 666);
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49
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50 binfn = get_binop_int('+');
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51 assert(binop_int(binfn, 10,100) == 110);
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52 binfn = get_binop_int('-');
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53 assert(binop_int(binfn, 10,100) == -90);
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55 {
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56 auto ffn = &mul_float;
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57 float ftmp = mul_float(2.5,5);
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58 assert(ftmp == 12.5);
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59 assert(ftmp > 12.49 && ftmp < 12.51);
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60 }
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61 }
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62
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63 void main()
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64 {
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65 printf("Function pointer test\n");
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66 function_pointers();
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67 printf(" SUCCESS\n");
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68 }