mirror of
https://github.com/bsnes-emu/bsnes.git
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94b2538af5
byuu says: Basically just a project rename, with s/bsnes/higan and the new icon from lowkee added in. It won't compile on Windows because I forgot to update the resource.rc file, and a path transform command isn't working on Windows. It was really just meant as a starting point, so that v091 WIPs can flow starting from .00 with the new name (it overshadows bsnes v091, so publicly speaking this "shouldn't exist" and will probably be deleted from Google Code when v092 is ready.)
104 lines
2.3 KiB
C++
Executable File
104 lines
2.3 KiB
C++
Executable File
#ifndef NALL_ATOI_HPP
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#define NALL_ATOI_HPP
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#include <nall/stdint.hpp>
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namespace nall {
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//note: this header is intended to form the base for user-defined literals;
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//once they are supported by GCC. eg:
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//unsigned operator "" b(const char *s) { return binary(s); }
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//-> signed data = 1001b;
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//(0b1001 is nicer, but is not part of the C++ standard)
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constexpr inline uintmax_t binary_(const char *s, uintmax_t sum = 0) {
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return (
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*s == '0' || *s == '1' ? binary_(s + 1, (sum << 1) | *s - '0') :
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sum
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);
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}
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constexpr inline uintmax_t octal_(const char *s, uintmax_t sum = 0) {
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return (
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*s >= '0' && *s <= '7' ? octal_(s + 1, (sum << 3) | *s - '0') :
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sum
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);
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}
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constexpr inline uintmax_t decimal_(const char *s, uintmax_t sum = 0) {
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return (
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*s >= '0' && *s <= '9' ? decimal_(s + 1, (sum * 10) + *s - '0') :
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sum
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);
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}
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constexpr inline uintmax_t hex_(const char *s, uintmax_t sum = 0) {
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return (
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*s >= 'A' && *s <= 'F' ? hex_(s + 1, (sum << 4) | *s - 'A' + 10) :
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*s >= 'a' && *s <= 'f' ? hex_(s + 1, (sum << 4) | *s - 'a' + 10) :
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*s >= '0' && *s <= '9' ? hex_(s + 1, (sum << 4) | *s - '0') :
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sum
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);
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}
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//
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constexpr inline uintmax_t binary(const char *s) {
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return (
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*s == '0' && *(s + 1) == 'B' ? binary_(s + 2) :
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*s == '0' && *(s + 1) == 'b' ? binary_(s + 2) :
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*s == '%' ? binary_(s + 1) :
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binary_(s)
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);
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}
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constexpr inline uintmax_t octal(const char *s) {
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return (
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octal_(s)
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);
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}
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constexpr inline intmax_t integer(const char *s) {
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return (
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*s == '+' ? +decimal_(s + 1) :
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*s == '-' ? -decimal_(s + 1) :
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decimal_(s)
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);
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}
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constexpr inline uintmax_t decimal(const char *s) {
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return (
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decimal_(s)
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);
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}
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constexpr inline uintmax_t hex(const char *s) {
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return (
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*s == '0' && *(s + 1) == 'X' ? hex_(s + 2) :
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*s == '0' && *(s + 1) == 'x' ? hex_(s + 2) :
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*s == '$' ? hex_(s + 1) :
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hex_(s)
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);
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}
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constexpr inline intmax_t numeral(const char *s) {
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return (
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*s == '0' && *(s + 1) == 'X' ? hex_(s + 2) :
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*s == '0' && *(s + 1) == 'x' ? hex_(s + 2) :
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*s == '0' && *(s + 1) == 'B' ? binary_(s + 2) :
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*s == '0' && *(s + 1) == 'b' ? binary_(s + 2) :
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*s == '0' ? octal_(s + 1) :
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*s == '+' ? +decimal_(s + 1) :
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*s == '-' ? -decimal_(s + 1) :
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decimal_(s)
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);
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}
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inline double fp(const char *s) {
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return atof(s);
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}
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}
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#endif
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