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Overview
Comment: | Use "long double" literals to initialize an array of "long double" objects. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
2e2ebad3ab636c4c65814ad41d417b10 |
User & Date: | drh 2019-05-25 17:41:07.575 |
Context
2019-05-25
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18:17 | Performance enhancement in sqlite3AtoF(). About 8% faster. (check-in: 81721aa545 user: drh tags: trunk) | |
17:41 | Use "long double" literals to initialize an array of "long double" objects. (check-in: 2e2ebad3ab user: drh tags: trunk) | |
13:14 | Add new cases to speedtest1 for measuring performance of binary to/from decimal conversions of floating point values. (check-in: b84e7057c0 user: drh tags: trunk) | |
Changes
Changes to src/util.c.
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355 356 357 358 359 360 361 | ** E==2 results in 100. E==50 results in 1.0e50. ** ** This routine only works for values of E between 1 and 341. */ static LONGDOUBLE_TYPE sqlite3Pow10(int E){ #if defined(_MSC_VER) static const LONGDOUBLE_TYPE x[] = { | | | | | | | | | | | 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 | ** E==2 results in 100. E==50 results in 1.0e50. ** ** This routine only works for values of E between 1 and 341. */ static LONGDOUBLE_TYPE sqlite3Pow10(int E){ #if defined(_MSC_VER) static const LONGDOUBLE_TYPE x[] = { 1.0e+001L, 1.0e+002L, 1.0e+004L, 1.0e+008L, 1.0e+016L, 1.0e+032L, 1.0e+064L, 1.0e+128L, 1.0e+256L }; LONGDOUBLE_TYPE r = 1.0; int i; assert( E>=0 && E<=307 ); for(i=0; E!=0; i++, E >>=1){ if( E & 1 ) r *= x[i]; } |
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