comparison: np/np-conv.h
np/np-conv.h
- changeset 60
- a4033700e35c
- child 62
- aae5facf9fc5
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| 59:d8ecbeda7683 | 60:a4033700e35c |
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| 1 /* | |
| 2 * libtu/np-conv.h | |
| 3 * | |
| 4 * Copyright (c) Tuomo Valkonen 1999-2002. | |
| 5 * | |
| 6 * You may distribute and modify this library under the terms of either | |
| 7 * the Clarified Artistic License or the GNU LGPL, version 2.1 or later. | |
| 8 */ | |
| 9 | |
| 10 #include <math.h> | |
| 11 | |
| 12 #ifdef NP_SIMPLE_IMPL | |
| 13 | |
| 14 #define FN_NUM_TO_SIGNED(T, UMAX, MAX, MIN) \ | |
| 15 static int num_to_##T(T *ret, const NPNum *num, bool allow_uns_big) \ | |
| 16 { \ | |
| 17 if(num->type!=NPNUM_INT) \ | |
| 18 return E_TOKZ_NOTINT; \ | |
| 19 \ | |
| 20 if(!num->negative){ \ | |
| 21 *ret=num->ival; \ | |
| 22 if(allow_uns_big?num->ival>UMAX:num->ival>MAX) \ | |
| 23 return E_TOKZ_RANGE; \ | |
| 24 }else{ \ | |
| 25 *ret=-num->ival; \ | |
| 26 if(num->ival>-(ulong)MIN) \ | |
| 27 return E_TOKZ_RANGE; \ | |
| 28 } \ | |
| 29 return 0; \ | |
| 30 } | |
| 31 | |
| 32 #define FN_NUM_TO_UNSIGNED(T, UMAX, MIN) \ | |
| 33 static int num_to_##T(T *ret, const NPNum *num, bool allow_neg) \ | |
| 34 { \ | |
| 35 if(num->type!=NPNUM_INT) \ | |
| 36 return E_TOKZ_NOTINT; \ | |
| 37 \ | |
| 38 if(!num->negative){ \ | |
| 39 *ret=num->ival; \ | |
| 40 if(num->ival>UMAX) \ | |
| 41 return E_TOKZ_RANGE; \ | |
| 42 }else{ \ | |
| 43 *ret=-num->ival; \ | |
| 44 if(!allow_neg || num->ival>(ulong)-MIN) \ | |
| 45 return E_TOKZ_RANGE; \ | |
| 46 } \ | |
| 47 return 0; \ | |
| 48 } | |
| 49 | |
| 50 #define FN_NUM_TO_FLOAT(T, POW) \ | |
| 51 static int num_to_##T(T *ret, const NPNum *num) \ | |
| 52 { \ | |
| 53 *ret=(num->negative?-num->fval:num->fval); \ | |
| 54 return 0; \ | |
| 55 } | |
| 56 | |
| 57 #else /* NP_SIMPLE_IMPL */ | |
| 58 | |
| 59 #define FN_NUM_TO_SIGNED(T, UMAX, MAX, MIN) \ | |
| 60 static int num_to_##T(T *ret, const NPNum *num, bool allow_uns_big) \ | |
| 61 { \ | |
| 62 if(num->exponent) \ | |
| 63 return E_TOKZ_NOTINT; \ | |
| 64 if(num->nmantissa>0) \ | |
| 65 return E_TOKZ_RANGE; \ | |
| 66 \ | |
| 67 if(!num->negative){ \ | |
| 68 *ret=num->mantissa[0]; \ | |
| 69 if(allow_uns_big?num->mantissa[0]>UMAX:num->mantissa[0]>MAX) \ | |
| 70 return E_TOKZ_RANGE; \ | |
| 71 }else{ \ | |
| 72 *ret=-num->mantissa[0]; \ | |
| 73 if(num->mantissa[0]>-(ulong)MIN) \ | |
| 74 return E_TOKZ_RANGE; \ | |
| 75 } \ | |
| 76 return 0; \ | |
| 77 } | |
| 78 | |
| 79 #define FN_NUM_TO_UNSIGNED(T, UMAX, MIN) \ | |
| 80 static int num_to_##T(T *ret, const NPNum *num, bool allow_neg) \ | |
| 81 { \ | |
| 82 if(num->exponent) \ | |
| 83 return E_TOKZ_NOTINT; \ | |
| 84 if(num->nmantissa>0) \ | |
| 85 return E_TOKZ_RANGE; \ | |
| 86 \ | |
| 87 if(!num->negative){ \ | |
| 88 *ret=num->mantissa[0]; \ | |
| 89 if(num->mantissa[0]>UMAX) \ | |
| 90 return E_TOKZ_RANGE; \ | |
| 91 }else{ \ | |
| 92 *ret=-num->mantissa[0]; \ | |
| 93 if(!allow_neg || num->mantissa[0]>(ulong)-MIN) \ | |
| 94 return E_TOKZ_RANGE; \ | |
| 95 } \ | |
| 96 return 0; \ | |
| 97 } | |
| 98 | |
| 99 | |
| 100 #define FN_NUM_TO_FLOAT(T, POW) \ | |
| 101 static int num_to_##T(T *ret, const NPNum *num) \ | |
| 102 { \ | |
| 103 T d=0; \ | |
| 104 int i; \ | |
| 105 \ | |
| 106 for(i=num->nmantissa;i>=0;i--) \ | |
| 107 d=d*(T)(ULONG_MAX+1.0)+num->mantissa[i]; \ | |
| 108 \ | |
| 109 d*=POW(num->base, num->exponent); \ | |
| 110 *ret=d; \ | |
| 111 \ | |
| 112 return 0; \ | |
| 113 } | |
| 114 | |
| 115 #endif /* NP_SIMPLE_IMPL */ | |
| 116 | |
| 117 FN_NUM_TO_SIGNED(long, ULONG_MAX, LONG_MAX, LONG_MIN) | |
| 118 FN_NUM_TO_SIGNED(char, UCHAR_MAX, CHAR_MAX, CHAR_MIN) | |
| 119 FN_NUM_TO_FLOAT(double, pow) | |
| 120 | |
| 121 #undef NEG |
