np-conv.h@63cd573ffbcf (annotated)
np-conv.h
Sat, 19 Jan 2002 19:31:04 +0100
- author
- tuomov
- date
- Sat, 19 Jan 2002 19:31:04 +0100
- changeset 36
- 63cd573ffbcf
- parent 9
- 55e7f2ff6021
- child 53
- f8f9366b359c
- permissions
- -rw-r--r--
trunk: changeset 39
- The tokenizer also supports reading from a buffer now.
- 2002 update
| 0 | 1 | /* |
| 2 | * libtu/np-conv.h | |
| 3 | * | |
| 36 | 4 | * Copyright (c) Tuomo Valkonen 1999-2002. |
| 0 | 5 | * See the included file LICENSE for details. |
| 6 | */ | |
| 7 | ||
| 8 | #include <math.h> | |
| 9 | ||
| 3 | 10 | #ifdef NP_SIMPLE_IMPL |
| 11 | ||
| 12 | #define FN_NUM_TO_SIGNED(T, UMAX, MAX, MIN) \ | |
| 13 | static int num_to_##T(T *ret, const NPNum *num, bool allow_uns_big) \ | |
| 14 | { \ | |
| 15 | if(num->type!=NPNUM_INT) \ | |
| 16 | return E_TOKZ_NOTINT; \ | |
| 17 | \ | |
| 18 | if(!num->negative){ \ | |
| 19 | *ret=num->ival; \ | |
| 20 | if(allow_uns_big?num->ival>UMAX:num->ival>MAX) \ | |
| 21 | return E_TOKZ_RANGE; \ | |
| 22 | }else{ \ | |
| 23 | *ret=-num->ival; \ | |
| 24 | if(num->ival>-(ulong)MIN) \ | |
| 25 | return E_TOKZ_RANGE; \ | |
| 26 | } \ | |
| 27 | return 0; \ | |
| 28 | } | |
| 29 | ||
| 30 | #define FN_NUM_TO_UNSIGNED(T, UMAX, MIN) \ | |
| 31 | static int num_to_##T(T *ret, const NPNum *num, bool allow_neg) \ | |
| 32 | { \ | |
| 33 | if(num->type!=NPNUM_INT) \ | |
| 34 | return E_TOKZ_NOTINT; \ | |
| 35 | \ | |
| 36 | if(!num->negative){ \ | |
| 37 | *ret=num->ival; \ | |
| 38 | if(num->ival>UMAX) \ | |
| 39 | return E_TOKZ_RANGE; \ | |
| 40 | }else{ \ | |
| 41 | *ret=-num->ival; \ | |
| 42 | if(!allow_neg || num->ival>(ulong)-MIN) \ | |
| 43 | return E_TOKZ_RANGE; \ | |
| 44 | } \ | |
| 45 | return 0; \ | |
| 46 | } | |
| 47 | ||
| 48 | #define FN_NUM_TO_FLOAT(T, POW) \ | |
| 49 | static int num_to_##T(T *ret, const NPNum *num) \ | |
| 50 | { \ | |
| 51 | *ret=(num->negative?-num->fval:num->fval); \ | |
| 52 | return 0; \ | |
| 53 | } | |
| 54 | ||
| 55 | #else /* NP_SIMPLE_IMPL */ | |
| 0 | 56 | |
| 57 | #define FN_NUM_TO_SIGNED(T, UMAX, MAX, MIN) \ | |
| 58 | static int num_to_##T(T *ret, const NPNum *num, bool allow_uns_big) \ | |
| 59 | { \ | |
| 60 | if(num->exponent) \ | |
| 61 | return E_TOKZ_NOTINT; \ | |
| 62 | if(num->nmantissa>0) \ | |
| 63 | return E_TOKZ_RANGE; \ | |
| 64 | \ | |
| 65 | if(!num->negative){ \ | |
| 66 | *ret=num->mantissa[0]; \ | |
| 67 | if(allow_uns_big?num->mantissa[0]>UMAX:num->mantissa[0]>MAX) \ | |
| 68 | return E_TOKZ_RANGE; \ | |
| 69 | }else{ \ | |
| 70 | *ret=-num->mantissa[0]; \ | |
| 71 | if(num->mantissa[0]>-(ulong)MIN) \ | |
| 72 | return E_TOKZ_RANGE; \ | |
| 73 | } \ | |
| 74 | return 0; \ | |
| 75 | } | |
| 76 | ||
| 77 | #define FN_NUM_TO_UNSIGNED(T, UMAX, MIN) \ | |
| 78 | static int num_to_##T(T *ret, const NPNum *num, bool allow_neg) \ | |
| 79 | { \ | |
| 80 | if(num->exponent) \ | |
| 81 | return E_TOKZ_NOTINT; \ | |
| 82 | if(num->nmantissa>0) \ | |
| 83 | return E_TOKZ_RANGE; \ | |
| 84 | \ | |
| 85 | if(!num->negative){ \ | |
| 86 | *ret=num->mantissa[0]; \ | |
| 87 | if(num->mantissa[0]>UMAX) \ | |
| 88 | return E_TOKZ_RANGE; \ | |
| 89 | }else{ \ | |
| 90 | *ret=-num->mantissa[0]; \ | |
| 91 | if(!allow_neg || num->mantissa[0]>(ulong)-MIN) \ | |
| 92 | return E_TOKZ_RANGE; \ | |
| 93 | } \ | |
| 94 | return 0; \ | |
| 95 | } | |
| 96 | ||
| 97 | ||
| 98 | #define FN_NUM_TO_FLOAT(T, POW) \ | |
| 99 | static int num_to_##T(T *ret, const NPNum *num) \ | |
| 100 | { \ | |
| 101 | T d=0; \ | |
| 102 | int i; \ | |
| 103 | \ | |
| 104 | for(i=num->nmantissa;i>=0;i--) \ | |
| 105 | d=d*(T)(ULONG_MAX+1.0)+num->mantissa[i]; \ | |
| 106 | \ | |
| 3 | 107 | d*=POW(num->base, num->exponent); \ |
| 0 | 108 | *ret=d; \ |
| 109 | \ | |
| 110 | return 0; \ | |
| 111 | } | |
| 112 | ||
| 3 | 113 | #endif /* NP_SIMPLE_IMPL */ |
| 114 | ||
| 0 | 115 | FN_NUM_TO_SIGNED(long, ULONG_MAX, LONG_MAX, LONG_MIN) |
| 116 | FN_NUM_TO_SIGNED(char, UCHAR_MAX, CHAR_MAX, CHAR_MIN) | |
| 117 | FN_NUM_TO_FLOAT(double, pow) | |
| 118 | ||
| 119 | #undef NEG |
