Reduce the size of the compiled binary by a couple of hundred bytes by

using a thigher packing of a transformation table in date.c.
Suggested by [forum:/forumpost/4f6efbb2a9|forum post 4f6efbb2a9].

FossilOrigin-Name: c75ba4fa644d338d22813c17172b9975411fe6197e07fd584e3209e3beb78036

diff --git a/manifest b/manifest
index 8ac551ff37ec0879a66ee82ee34bf8af1ea75638..8f88f474704a41d9df7c1428348b5bd32bfe1515 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Update\sthe\sREADME.md\sto\sinstruct\sthe\suser\sto\sremove\sthe\sfinal\scomment\sline\nfrom\sthe\s"manifest"\sfile\sbefore\susing\sit\sto\scompute\sthe\scheck-in\shash.
-D 2021-12-21T16:59:45.424
+C Reduce\sthe\ssize\sof\sthe\scompiled\sbinary\sby\sa\scouple\sof\shundred\sbytes\sby\nusing\sa\sthigher\spacking\sof\sa\stransformation\stable\sin\sdate.c.\nSuggested\sby\s[forum:/forumpost/4f6efbb2a9|forum\spost\s4f6efbb2a9].
+D 2021-12-23T00:16:06.350
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -498,7 +498,7 @@ F src/build.c 107e1ecc98ca8965c2e08fc283a06067a1d829b1a82531a6f0a0e0fa60e7b0c1
 F src/callback.c 106b585da1edd57d75fa579d823a5218e0bf37f191dbf7417eeb4a8a9a267dbc
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c 8159d5f706551861c18ec6c8f6bdf105e15ea00367f05d9ab65d31a1077facc1
-F src/date.c b49c12c7564ddd7f1922f76e7a086a6db5b91aa0e729b180cd433e22bab37be0
+F src/date.c ab8e01d928f201f5dee0bc6d54d6702fdcec96dff4d58c387447671f6a46d191
 F src/dbpage.c 8a01e865bf8bc6d7b1844b4314443a6436c07c3efe1d488ed89e81719047833a
 F src/dbstat.c 861e08690fcb0f2ee1165eff0060ea8d4f3e2ea10f80dab7d32ad70443a6ff2d
 F src/delete.c 19814f621cde10b1771a0dea7fe25d3d7d39975b8d4be4888537d30860e7c08c
@@ -1934,7 +1934,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P d9f814a6402ca7fd999bbb847dc354b52ab9b97cae0c932344584d26c9430f24
-R db9606205e7c40e39afd2f95792c8925
+P 7b4f9d95a95f685ea4ee045e43c67b1a5c70e908e357b0b41d522699255663ce
+R 7b101808d3a49cd62c69eb0ecccc8da0
 U drh
-Z c2c3d0387ea5fddc68383e50b25ca47d
+Z 7db45fce779218ebd5032a4f8090eaaf
+# Remove this line to create a well-formed Fossil manifest.

diff --git a/manifest.uuid b/manifest.uuid
index 711c78ee6815eba809a8cdc12ca060e0a34b13b4..5abf37fc5b20056545e6b179c8d9e6ab76ceddec 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-7b4f9d95a95f685ea4ee045e43c67b1a5c70e908e357b0b41d522699255663ce
\ No newline at end of file
+c75ba4fa644d338d22813c17172b9975411fe6197e07fd584e3209e3beb78036
\ No newline at end of file

diff --git a/src/date.c b/src/date.c
index f5b22d7538a96d52943a5673806b8376c8798eff..b018c39f6874f7bec2d9d67d5f362af40ba0598b 100644 (file)
--- a/src/date.c
+++ b/src/date.c
@@ -617,18 +617,17 @@ static sqlite3_int64 localtimeOffset(
 ** of several units of time.
 */
 static const struct {
-  u8 eType;           /* Transformation type code */
-  u8 nName;           /* Length of th name */
-  char *zName;        /* Name of the transformation */
-  double rLimit;      /* Maximum NNN value for this transform */
-  double rXform;      /* Constant used for this transform */
+  u8 nName;           /* Length of the name */
+  char zName[7];      /* Name of the transformation */
+  float rLimit;       /* Maximum NNN value for this transform */
+  float rXform;       /* Constant used for this transform */
 } aXformType[] = {
-  { 0, 6, "second", 464269060800.0, 1000.0         },
-  { 0, 6, "minute", 7737817680.0,   60000.0        },
-  { 0, 4, "hour",   128963628.0,    3600000.0      },
-  { 0, 3, "day",    5373485.0,      86400000.0     },
-  { 1, 5, "month",  176546.0,       2592000000.0   },
-  { 2, 4, "year",   14713.0,        31536000000.0  },
+  { 6, "second", 4.6427e+14,       1.0  },
+  { 6, "minute", 7.7379e+12,      60.0  },
+  { 4, "hour",   1.2897e+11,    3600.0  },
+  { 3, "day",    5373485.0,    86400.0  },
+  { 5, "month",  176546.0,   2592000.0  },
+  { 4, "year",   14713.0,   31536000.0  },
 };
 
 /*
@@ -865,9 +864,10 @@ static int parseModifier(
          && sqlite3_strnicmp(aXformType[i].zName, z, n)==0
          && r>-aXformType[i].rLimit && r<aXformType[i].rLimit
         ){
-          switch( aXformType[i].eType ){
-            case 1: { /* Special processing to add months */
+          switch( i ){
+            case 4: { /* Special processing to add months */
               int x;
+              assert( strcmp(aXformType[i].zName,"month")==0 );
               computeYMD_HMS(p);
               p->M += (int)r;
               x = p->M>0 ? (p->M-1)/12 : (p->M-12)/12;
@@ -877,8 +877,9 @@ static int parseModifier(
               r -= (int)r;
               break;
             }
-            case 2: { /* Special processing to add years */
+            case 5: { /* Special processing to add years */
               int y = (int)r;
+              assert( strcmp(aXformType[i].zName,"year")==0 );
               computeYMD_HMS(p);
               p->Y += y;
               p->validJD = 0;
@@ -887,7 +888,7 @@ static int parseModifier(
             }
           }
           computeJD(p);
-          p->iJD += (sqlite3_int64)(r*aXformType[i].rXform + rRounder);
+          p->iJD += (sqlite3_int64)(r*1000.0*aXformType[i].rXform + rRounder);
           rc = 0;
           break;
         }