regularize str -> num convertors

1 files changed, 94 insertions, 0 deletions

diff --git a/include/xatonum.h b/include/xatonum.h
new file mode 100644
index 000000000..cdb5e7393
--- /dev/null
+++ b/include/xatonum.h
@@ -0,0 +1,94 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * ascii-to-numbers implementations for busybox
+ *
+ * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
+
+/* Provides extern declarations of functions */
+#define DECLARE_STR_CONV(type, T, UT) \
+\
+unsigned type xstrto##UT##_range_sfx(const char *str, int b, unsigned type l, unsigned type u, const struct suffix_mult *sfx); \
+unsigned type xstrto##UT##_range(const char *str, int b, unsigned type l, unsigned type u); \
+unsigned type xstrto##UT##_sfx(const char *str, int b, const struct suffix_mult *sfx); \
+unsigned type xstrto##UT(const char *str, int b); \
+unsigned type xato##UT##_range_sfx(const char *str, unsigned type l, unsigned type u, const struct suffix_mult *sfx); \
+unsigned type xato##UT##_range(const char *str, unsigned type l, unsigned type u); \
+unsigned type xato##UT##_sfx(const char *str, const struct suffix_mult *sfx); \
+unsigned type xato##UT(const char *str); \
+type xstrto##T##_range_sfx(const char *str, int b, type l, type u, const struct suffix_mult *sfx) ;\
+type xstrto##T##_range(const char *str, int b, type l, type u); \
+type xato##T##_range_sfx(const char *str, type l, type u, const struct suffix_mult *sfx); \
+type xato##T##_range(const char *str, type l, type u); \
+type xato##T##_sfx(const char *str, const struct suffix_mult *sfx); \
+type xato##T(const char *str); \
+
+/* Unsigned long long functions always exist */
+DECLARE_STR_CONV(long long, ll, ull)
+
+
+/* Provides extern inline definitions of functions */
+/* (useful for mapping them to the type of the same width) */
+#define DEFINE_EQUIV_STR_CONV(narrow, N, W, UN, UW) \
+\
+extern inline \
+unsigned narrow xstrto##UN##_range_sfx(const char *str, int b, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
+{ return xstrto##UW##_range_sfx(str, b, l, u, sfx); } \
+extern inline \
+unsigned narrow xstrto##UN##_range(const char *str, int b, unsigned narrow l, unsigned narrow u) \
+{ return xstrto##UW##_range(str, b, l, u); } \
+extern inline \
+unsigned narrow xstrto##UN##_sfx(const char *str, int b, const struct suffix_mult *sfx) \
+{ return xstrto##UW##_sfx(str, b, sfx); } \
+extern inline \
+unsigned narrow xstrto##UN(const char *str, int b) \
+{ return xstrto##UW(str, b); } \
+extern inline \
+unsigned narrow xato##UN##_range_sfx(const char *str, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
+{ return xato##UW##_range_sfx(str, l, u, sfx); } \
+extern inline \
+unsigned narrow xato##UN##_range(const char *str, unsigned narrow l, unsigned narrow u) \
+{ return xato##UW##_range(str, l, u); } \
+extern inline \
+unsigned narrow xato##UN##_sfx(const char *str, const struct suffix_mult *sfx) \
+{ return xato##UW##_sfx(str, sfx); } \
+extern inline \
+unsigned narrow xato##UN(const char *str) \
+{ return xato##UW(str); } \
+extern inline \
+narrow xstrto##N##_range_sfx(const char *str, int b, narrow l, narrow u, const struct suffix_mult *sfx) \
+{ return xstrto##W##_range_sfx(str, b, l, u, sfx); } \
+extern inline \
+narrow xstrto##N##_range(const char *str, int b, narrow l, narrow u) \
+{ return xstrto##W##_range(str, b, l, u); } \
+extern inline \
+narrow xato##N##_range_sfx(const char *str, narrow l, narrow u, const struct suffix_mult *sfx) \
+{ return xato##W##_range_sfx(str, l, u, sfx); } \
+extern inline \
+narrow xato##N##_range(const char *str, narrow l, narrow u) \
+{ return xato##W##_range(str, l, u); } \
+extern inline \
+narrow xato##N##_sfx(const char *str, const struct suffix_mult *sfx) \
+{ return xato##W##_sfx(str, sfx); } \
+extern inline \
+narrow xato##N(const char *str) \
+{ return xato##W(str); } \
+
+/* If long == long long, then just map them one-to-one */
+#if ULONG_MAX == ULLONG_MAX
+DEFINE_EQUIV_STR_CONV(long, l, ll, ul, ull)
+#else
+/* Else provide extern defs */
+DECLARE_STR_CONV(long, l, ul)
+#endif
+
+/* Same for int -> [long] long */
+#if UINT_MAX == ULLONG_MAX
+DEFINE_EQUIV_STR_CONV(int, i, ll, u, ull)
+#elif UINT_MAX == ULONG_MAX
+DEFINE_EQUIV_STR_CONV(int, i, l, u, ul)
+#else
+DECLARE_STR_CONV(int, i, u)
+#endif