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| author | Kenta Murata <mrkn@mrkn.jp> | 2022-11-13 10:50:33 +0900 |
|---|---|---|
| committer | git <svn-admin@ruby-lang.org> | 2022-11-13 02:02:01 +0000 |
| commit | 74c6e6e565aad4cbf2e5b7a13c21e78361808404 (patch) | |
| tree | 5c3c4c7a1872ca9433e6f086d7765673e30eb0dd /ext/bigdecimal/bigdecimal.h | |
| parent | b89769b978588ede479bea17fedc976d4387b281 (diff) | |
[ruby/bigdecimal] Rewrite check_rounding_mode function
Use table-lookup algorithm instead of consecutive if-statements.
https://github.com/ruby/bigdecimal/commit/23eaff3ae5
Diffstat (limited to 'ext/bigdecimal/bigdecimal.h')
| -rw-r--r-- | ext/bigdecimal/bigdecimal.h | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/ext/bigdecimal/bigdecimal.h b/ext/bigdecimal/bigdecimal.h index bd1c46743e..38dee51e68 100644 --- a/ext/bigdecimal/bigdecimal.h +++ b/ext/bigdecimal/bigdecimal.h @@ -102,7 +102,7 @@ extern VALUE rb_cBigDecimal; */ #define VP_EXPORT static -/* Exception codes */ +/* Exception mode */ #define VP_EXCEPTION_ALL ((unsigned short)0x00FF) #define VP_EXCEPTION_INFINITY ((unsigned short)0x0001) #define VP_EXCEPTION_NaN ((unsigned short)0x0002) @@ -115,18 +115,36 @@ extern VALUE rb_cBigDecimal; #define BIGDECIMAL_EXCEPTION_MODE_DEFAULT 0U -/* Computation mode */ +/* This is used in BigDecimal#mode */ #define VP_ROUND_MODE ((unsigned short)0x0100) -#define VP_ROUND_UP 1 -#define VP_ROUND_DOWN 2 -#define VP_ROUND_HALF_UP 3 -#define VP_ROUND_HALF_DOWN 4 -#define VP_ROUND_CEIL 5 -#define VP_ROUND_FLOOR 6 -#define VP_ROUND_HALF_EVEN 7 + +/* Rounding mode */ +#define VP_ROUND_UP RBD_ROUND_UP +#define VP_ROUND_DOWN RBD_ROUND_DOWN +#define VP_ROUND_HALF_UP RBD_ROUND_HALF_UP +#define VP_ROUND_HALF_DOWN RBD_ROUND_HALF_DOWN +#define VP_ROUND_CEIL RBD_ROUND_CEIL +#define VP_ROUND_FLOOR RBD_ROUND_FLOOR +#define VP_ROUND_HALF_EVEN RBD_ROUND_HALF_EVEN + +enum rbd_rounding_mode { + RBD_ROUND_UP = 1, + RBD_ROUND_DOWN = 2, + RBD_ROUND_HALF_UP = 3, + RBD_ROUND_HALF_DOWN = 4, + RBD_ROUND_CEIL = 5, + RBD_ROUND_FLOOR = 6, + RBD_ROUND_HALF_EVEN = 7, + + RBD_ROUND_DEFAULT = RBD_ROUND_HALF_UP, + RBD_ROUND_TRUNCATE = RBD_ROUND_DOWN, + RBD_ROUND_BANKER = RBD_ROUND_HALF_EVEN, + RBD_ROUND_CEILING = RBD_ROUND_CEIL +}; #define BIGDECIMAL_ROUNDING_MODE_DEFAULT VP_ROUND_HALF_UP +/* Sign flag */ #define VP_SIGN_NaN 0 /* NaN */ #define VP_SIGN_POSITIVE_ZERO 1 /* Positive zero */ #define VP_SIGN_NEGATIVE_ZERO -1 /* Negative zero */ @@ -135,6 +153,7 @@ extern VALUE rb_cBigDecimal; #define VP_SIGN_POSITIVE_INFINITE 3 /* Positive infinite number */ #define VP_SIGN_NEGATIVE_INFINITE -3 /* Negative infinite number */ +/* The size of fraction part array */ #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) #define FLEXIBLE_ARRAY_SIZE /* */ #elif defined(__GNUC__) && !defined(__STRICT_ANSI__) |