| 414 | } |
| 415 | |
| 416 | void |
| 417 | testWithinULP() |
| 418 | { |
| 419 | std::mt19937_64 rng; |
| 420 | |
| 421 | checkAccuracy("10199214983525025199.13135016100190689227e-308", 2); |
| 422 | |
| 423 | for( int i = 0; i < 1000000; ++i ) |
| 424 | { |
| 425 | unsigned long long x1 = rng(); |
| 426 | unsigned long long x2 = rng(); |
| 427 | int x3 = std::uniform_int_distribution<>( -308, +308 )( rng ); |
| 428 | |
| 429 | char buffer[ 128 ]; |
| 430 | sprintf( buffer, "%llu.%llue%d", x1, x2, x3 ); |
| 431 | |
| 432 | parse_options precise; |
| 433 | precise.numbers = number_precision::precise; |
| 434 | checkAccuracy( buffer, 2 ); |
| 435 | checkAccuracy( buffer, 0, precise ); |
| 436 | } |
| 437 | |
| 438 | for( int i = -326; i <= +309; ++i ) |
| 439 | { |
| 440 | char buffer[ 128 ]; |
| 441 | sprintf( buffer, "1e%d", i ); |
| 442 | |
| 443 | checkAccuracy( buffer, 0 ); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | void |
| 448 | testExtraPrecision() |