1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // math4.cfa -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Thu May 24 20:56:54 2018 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Tue Nov 6 17:59:14 2018 |
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13 | // Update Count : 3 |
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14 | // |
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15 | |
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16 | #include <fstream.hfa> |
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17 | #include <math.hfa> |
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18 | |
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19 | int main( void ) { |
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20 | float f; |
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21 | double d; |
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22 | long double l; |
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23 | |
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24 | //---------------------- Nearest Integer ---------------------- |
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25 | |
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26 | sout | "floor:" | floor( 1.2F ) | floor( 1.2D ) | floor( 1.2L ) | endl; |
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27 | sout | "ceil:" | ceil( 1.6F ) | ceil( 1.6D ) | ceil( 1.6L ) | endl; |
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28 | sout | "trunc:" | trunc( 3.5F ) | trunc( 3.5D ) | trunc( 3.5L ) | endl; |
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29 | sout | "rint:" | (float)rint( 1.5F ) | (double)rint( 1.5D ) | (long double)rint( 1.5L ) | endl; |
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30 | sout | "rint:" | (long int)rint( 1.5F ) | (long int)rint( 1.5D ) | (long int)rint( 1.5L ) | endl; |
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31 | sout | "rint:" | (long long int)rint( 1.5F ) | (long long int)rint( 1.5D ) | (long long int)rint( 1.5L ) | endl; |
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32 | sout | "lrint:" | lrint( 1.5F ) | lrint( 1.5D ) | lrint( 1.5L ) | endl; |
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33 | sout | "llrint:" | llrint( 1.5F ) | llrint( 1.5D ) | llrint( 1.5L ) | endl; |
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34 | sout | "nearbyint:" | nearbyint( 3.5F ) | nearbyint( 3.5D ) | nearbyint( 3.5L ) | endl; |
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35 | sout | "round:" | (float)round( 1.5F ) | (double)round( 1.5D ) | (long double)round( 1.5L ) | endl; |
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36 | sout | "round:" | (long int)round( 1.5F ) | (long int)round( 1.5D ) | (long int)round( 1.5L ) | endl; |
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37 | sout | "round:" | (long long int)round( 1.5F ) | (long long int)round( 1.5D ) | (long long int)round( 1.5L ) | endl; |
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38 | sout | "lround:" | lround( 1.5F ) | lround( 1.5D ) | lround( 1.5L ) | endl; |
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39 | sout | "llround:" | llround( 1.5F ) | llround( 1.5D ) | llround( 1.5L ) | endl; |
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40 | |
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41 | //---------------------- Manipulation ---------------------- |
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42 | |
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43 | sout | "copysign:" | copysign( 1.0F, -1.0F ) | copysign( 1.0D, -1.0D ) | copysign( 1.0L, -1.0L ) | endl; |
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44 | int exp; |
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45 | f = frexp( 4.0F, &exp ); |
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46 | sout | "frexp:" | f | exp; |
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47 | d = frexp( 4.0D, &exp ); |
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48 | sout | d | exp; |
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49 | l = frexp( 4.0L, &exp ); |
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50 | sout | l | exp | endl; |
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51 | sout | "ldexp:" | ldexp( 2.0F, 2 ) | ldexp( 2.0D, 2 ) | ldexp( 2.0L, 2 ) | endl; |
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52 | float fi; |
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53 | double di; |
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54 | long double ldi; |
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55 | f = modf( 2.3F, &fi ); |
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56 | sout | "modf:" | fi | f; |
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57 | d = modf( 2.3D, &di ); |
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58 | sout | di | d; |
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59 | l = modf( 2.3L, &ldi ); |
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60 | sout | ldi | l | endl; |
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61 | sout | "modf:" | modf( 2.3F ) | modf( 2.3D ) | modf( 2.3L ) | endl; |
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62 | sout | "nextafter:" | nextafter( 2.0F, 3.0F ) | nextafter( 2.0D, 3.0D ) | nextafter( 2.0L, 3.0L ) | endl; |
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63 | sout | "nexttoward:" | nexttoward( 2.0F, 3.0F ) | nexttoward( 2.0D, 3.0D ) | nexttoward( 2.0L, 3.0L ) | endl; |
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64 | |
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65 | sout | "scalbn:" | scalbn( 2.0F, 3 ) | scalbn( 2.0D, 3 ) | scalbn( 2.0L, 3 ) | endl; |
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66 | sout | "scalbln:" | scalbln( 2.0F, 3L ) | scalbln( 2.0D, 3L ) | scalbln( 2.0L, 3L ) | endl; |
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67 | } // main |
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68 | |
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69 | // Local Variables: // |
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70 | // tab-width: 4 // |
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71 | // compile-command: "cfa math3.cfa" // |
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72 | // End: // |
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