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expr.c (256281) expr.c (259890)
1/* Parse C expressions for cpplib.
2 Copyright (C) 1987, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
3 2002, 2004 Free Software Foundation.
4 Contributed by Per Bothner, 1994.
5
6This program is free software; you can redistribute it and/or modify it
7under the terms of the GNU General Public License as published by the
8Free Software Foundation; either version 2, or (at your option) any

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82static unsigned int
83interpret_float_suffix (const uchar *s, size_t len)
84{
85 size_t f = 0, l = 0, i = 0, d = 0, d0 = 0;
86
87 while (len--)
88 switch (s[len])
89 {
1/* Parse C expressions for cpplib.
2 Copyright (C) 1987, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
3 2002, 2004 Free Software Foundation.
4 Contributed by Per Bothner, 1994.
5
6This program is free software; you can redistribute it and/or modify it
7under the terms of the GNU General Public License as published by the
8Free Software Foundation; either version 2, or (at your option) any

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82static unsigned int
83interpret_float_suffix (const uchar *s, size_t len)
84{
85 size_t f = 0, l = 0, i = 0, d = 0, d0 = 0;
86
87 while (len--)
88 switch (s[len])
89 {
90 case 'f': case 'F': f++; break;
91 case 'l': case 'L': l++; break;
92 case 'i': case 'I':
93 case 'j': case 'J': i++; break;
94 case 'd': case 'D':
95 /* Disallow fd, ld suffixes. */
96 if (d && (f || l))
90 case 'f': case 'F':
91 if (d > 0)
97 return 0;
92 return 0;
98 d++;
93 f++;
99 break;
94 break;
95 case 'l': case 'L':
96 if (d > 0)
97 return 0;
98 l++;
99 break;
100 case 'i': case 'I':
101 case 'j': case 'J': i++; break;
102 case 'd': case 'D': d++; break;
100 default:
101 return 0;
102 }
103
104 if (d == 1 && !f && !l) {
105 d = 0;
106 d0 = 1;
107 }

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489 add_high = (num.high << 1) + (num.low >> (PART_PRECISION - 1));
490 }
491 else
492 add_high = add_low = 0;
493
494 if (add_low + digit < add_low)
495 add_high++;
496 add_low += digit;
103 default:
104 return 0;
105 }
106
107 if (d == 1 && !f && !l) {
108 d = 0;
109 d0 = 1;
110 }

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492 add_high = (num.high << 1) + (num.low >> (PART_PRECISION - 1));
493 }
494 else
495 add_high = add_low = 0;
496
497 if (add_low + digit < add_low)
498 add_high++;
499 add_low += digit;
497
500
498 if (result.low + add_low < result.low)
499 add_high++;
500 if (result.high + add_high < result.high)
501 overflow = true;
502
503 result.low += add_low;
504 result.high += add_high;
505 result.overflow = overflow;

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1575 if (op == CPP_DIV)
1576 {
1577 result.unsignedp = unsignedp;
1578 result.overflow = false;
1579 if (!unsignedp)
1580 {
1581 if (negate)
1582 result = num_negate (result, precision);
501 if (result.low + add_low < result.low)
502 add_high++;
503 if (result.high + add_high < result.high)
504 overflow = true;
505
506 result.low += add_low;
507 result.high += add_high;
508 result.overflow = overflow;

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1578 if (op == CPP_DIV)
1579 {
1580 result.unsignedp = unsignedp;
1581 result.overflow = false;
1582 if (!unsignedp)
1583 {
1584 if (negate)
1585 result = num_negate (result, precision);
1583 result.overflow = num_positive (result, precision) ^ !negate;
1586 result.overflow = (num_positive (result, precision) ^ !negate
1587 && !num_zerop (result));
1584 }
1585
1586 return result;
1587 }
1588
1589 /* CPP_MOD. */
1590 lhs.unsignedp = unsignedp;
1591 lhs.overflow = false;
1592 if (lhs_neg)
1593 lhs = num_negate (lhs, precision);
1594
1595 return lhs;
1596}
1588 }
1589
1590 return result;
1591 }
1592
1593 /* CPP_MOD. */
1594 lhs.unsignedp = unsignedp;
1595 lhs.overflow = false;
1596 if (lhs_neg)
1597 lhs = num_negate (lhs, precision);
1598
1599 return lhs;
1600}