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Unified Diff: fusl/src/internal/intscan.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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« fusl/arch/aarch64/atomic_arch.h ('K') | « fusl/src/internal/intscan.h ('k') | fusl/src/internal/ksigaction.h » ('j') | no next file with comments »
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Index: fusl/src/internal/intscan.c
diff --git a/fusl/src/internal/intscan.c b/fusl/src/internal/intscan.c
index 65d497ec8a6fbabe6dafe65983d79c2bb9b2abf1..6055337a413d35532236210a6d0d6fd2f17a891a 100644
--- a/fusl/src/internal/intscan.c
+++ b/fusl/src/internal/intscan.c
@@ -4,97 +4,108 @@
#include "shgetc.h"
/* Lookup table for digit values. -1==255>=36 -> invalid */
-static const unsigned char table[] = { -1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1,
--1,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,
-25,26,27,28,29,30,31,32,33,34,35,-1,-1,-1,-1,-1,
--1,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,
-25,26,27,28,29,30,31,32,33,34,35,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
--1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+static const unsigned char table[] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, -1, -1, -1, -1, -1, -1, -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
+ 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1,
+ -1, -1, -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
+ 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
};
-unsigned long long __intscan(FILE *f, unsigned base, int pok, unsigned long long lim)
-{
- const unsigned char *val = table+1;
- int c, neg=0;
- unsigned x;
- unsigned long long y;
- if (base > 36) {
- errno = EINVAL;
- return 0;
- }
- while (isspace((c=shgetc(f))));
- if (c=='+' || c=='-') {
- neg = -(c=='-');
- c = shgetc(f);
- }
- if ((base == 0 || base == 16) && c=='0') {
- c = shgetc(f);
- if ((c|32)=='x') {
- c = shgetc(f);
- if (val[c]>=16) {
- shunget(f);
- if (pok) shunget(f);
- else shlim(f, 0);
- return 0;
- }
- base = 16;
- } else if (base == 0) {
- base = 8;
- }
- } else {
- if (base == 0) base = 10;
- if (val[c] >= base) {
- shunget(f);
- shlim(f, 0);
- errno = EINVAL;
- return 0;
- }
- }
- if (base == 10) {
- for (x=0; c-'0'<10U && x<=UINT_MAX/10-1; c=shgetc(f))
- x = x*10 + (c-'0');
- for (y=x; c-'0'<10U && y<=ULLONG_MAX/10 && 10*y<=ULLONG_MAX-(c-'0'); c=shgetc(f))
- y = y*10 + (c-'0');
- if (c-'0'>=10U) goto done;
- } else if (!(base & base-1)) {
- int bs = "\0\1\2\4\7\3\6\5"[(0x17*base)>>5&7];
- for (x=0; val[c]<base && x<=UINT_MAX/32; c=shgetc(f))
- x = x<<bs | val[c];
- for (y=x; val[c]<base && y<=ULLONG_MAX>>bs; c=shgetc(f))
- y = y<<bs | val[c];
- } else {
- for (x=0; val[c]<base && x<=UINT_MAX/36-1; c=shgetc(f))
- x = x*base + val[c];
- for (y=x; val[c]<base && y<=ULLONG_MAX/base && base*y<=ULLONG_MAX-val[c]; c=shgetc(f))
- y = y*base + val[c];
- }
- if (val[c]<base) {
- for (; val[c]<base; c=shgetc(f));
- errno = ERANGE;
- y = lim;
- if (lim&1) neg = 0;
- }
+unsigned long long __intscan(FILE* f,
+ unsigned base,
+ int pok,
+ unsigned long long lim) {
+ const unsigned char* val = table + 1;
+ int c, neg = 0;
+ unsigned x;
+ unsigned long long y;
+ if (base > 36) {
+ errno = EINVAL;
+ return 0;
+ }
+ while (isspace((c = shgetc(f))))
+ ;
+ if (c == '+' || c == '-') {
+ neg = -(c == '-');
+ c = shgetc(f);
+ }
+ if ((base == 0 || base == 16) && c == '0') {
+ c = shgetc(f);
+ if ((c | 32) == 'x') {
+ c = shgetc(f);
+ if (val[c] >= 16) {
+ shunget(f);
+ if (pok)
+ shunget(f);
+ else
+ shlim(f, 0);
+ return 0;
+ }
+ base = 16;
+ } else if (base == 0) {
+ base = 8;
+ }
+ } else {
+ if (base == 0)
+ base = 10;
+ if (val[c] >= base) {
+ shunget(f);
+ shlim(f, 0);
+ errno = EINVAL;
+ return 0;
+ }
+ }
+ if (base == 10) {
+ for (x = 0; c - '0' < 10U && x <= UINT_MAX / 10 - 1; c = shgetc(f))
+ x = x * 10 + (c - '0');
+ for (y = x; c - '0' < 10U && y <= ULLONG_MAX / 10 &&
+ 10 * y <= ULLONG_MAX - (c - '0');
+ c = shgetc(f))
+ y = y * 10 + (c - '0');
+ if (c - '0' >= 10U)
+ goto done;
+ } else if (!(base & base - 1)) {
+ int bs = "\0\1\2\4\7\3\6\5"[(0x17 * base) >> 5 & 7];
+ for (x = 0; val[c] < base && x <= UINT_MAX / 32; c = shgetc(f))
+ x = x << bs | val[c];
+ for (y = x; val[c] < base && y <= ULLONG_MAX >> bs; c = shgetc(f))
+ y = y << bs | val[c];
+ } else {
+ for (x = 0; val[c] < base && x <= UINT_MAX / 36 - 1; c = shgetc(f))
+ x = x * base + val[c];
+ for (y = x; val[c] < base && y <= ULLONG_MAX / base &&
+ base * y <= ULLONG_MAX - val[c];
+ c = shgetc(f))
+ y = y * base + val[c];
+ }
+ if (val[c] < base) {
+ for (; val[c] < base; c = shgetc(f))
+ ;
+ errno = ERANGE;
+ y = lim;
+ if (lim & 1)
+ neg = 0;
+ }
done:
- shunget(f);
- if (y>=lim) {
- if (!(lim&1) && !neg) {
- errno = ERANGE;
- return lim-1;
- } else if (y>lim) {
- errno = ERANGE;
- return lim;
- }
- }
- return (y^neg)-neg;
+ shunget(f);
+ if (y >= lim) {
+ if (!(lim & 1) && !neg) {
+ errno = ERANGE;
+ return lim - 1;
+ } else if (y > lim) {
+ errno = ERANGE;
+ return lim;
+ }
+ }
+ return (y ^ neg) - neg;
}
« fusl/arch/aarch64/atomic_arch.h ('K') | « fusl/src/internal/intscan.h ('k') | fusl/src/internal/ksigaction.h » ('j') | no next file with comments »

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