comparison: src/Utils.cpp
src/Utils.cpp
- changeset 42
- 88e827ea7172
- parent 29
- 76846c99f827
- child 57
- 75d11cc05ce4
equal
deleted
inserted
replaced
| 41:dc4b659a320b | 42:88e827ea7172 |
|---|---|
| 14 * You should have received a copy of the GNU General Public License | 14 * You should have received a copy of the GNU General Public License |
| 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. | 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 */ | 16 */ |
| 17 #include "Utils.h" | 17 #include "Utils.h" |
| 18 | 18 |
| 19 #include <QDebug> | |
| 19 #include <math.h> | 20 #include <math.h> |
| 20 | 21 |
| 21 | 22 |
| 22 double Utils::lintner_to_kolbach(double lintner) | 23 double Utils::lintner_to_kolbach(double lintner) |
| 23 { | 24 { |
| 31 double Utils::kolbach_to_lintner(double kolbach) | 32 double Utils::kolbach_to_lintner(double kolbach) |
| 32 { | 33 { |
| 33 return round(((kolbach + 16) / 3.5) * 1000.0) / 1000.0; | 34 return round(((kolbach + 16) / 3.5) * 1000.0) / 1000.0; |
| 34 } | 35 } |
| 35 | 36 |
| 37 | |
| 38 double Utils::ebc_to_srm(double ebc) | |
| 39 { | |
| 40 double srm = -1.32303E-12 * pow(ebc, 4) - 0.00000000291515 * pow(ebc, 3) + 0.00000818515 * pow(ebc, 2) + 0.372038 * ebc + 0.596351; | |
| 41 if (ebc < 0 || srm < 0) | |
| 42 qDebug() << "ebc_to_srm(" << ebc << ") =" << srm; | |
| 43 return srm; | |
| 44 } | |
| 45 | |
| 46 | |
| 47 double Utils::srm_to_ebc(double srm) | |
| 48 { | |
| 49 // Formule van Adrie Otten. brouwhulp. | |
| 50 double ebc = round( 0.000000000176506 * pow(srm, 4) + 0.000000154529 * pow(srm, 3) - 0.000159428 * pow(srm, 2) + 2.68837 * srm - 1.6004 ); | |
| 51 if ((ebc < 0) || (srm < 0)) | |
| 52 qDebug() << "srm_to_ebc(" << srm << ") =" << ebc; | |
| 53 return ebc; | |
| 54 } | |
| 55 | |
| 56 | |
| 57 |
