| 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 Dec 4 18:15:01 2018 |
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| 13 | // Update Count : 4 |
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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 ); |
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| 27 | sout | "ceil:" | ceil( 1.6F ) | ceil( 1.6D ) | ceil( 1.6L ); |
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| 28 | sout | "trunc:" | trunc( 3.5F ) | trunc( 3.5D ) | trunc( 3.5L ); |
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| 29 | sout | "rint:" | (float)rint( 1.5F ) | (double)rint( 1.5D ) | (long double)rint( 1.5L ); |
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| 30 | sout | "rint:" | (long int)rint( 1.5F ) | (long int)rint( 1.5D ) | (long int)rint( 1.5L ); |
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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 ); |
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| 32 | sout | "lrint:" | lrint( 1.5F ) | lrint( 1.5D ) | lrint( 1.5L ); |
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| 33 | sout | "llrint:" | llrint( 1.5F ) | llrint( 1.5D ) | llrint( 1.5L ); |
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| 34 | sout | "nearbyint:" | nearbyint( 3.5F ) | nearbyint( 3.5D ) | nearbyint( 3.5L ); |
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| 35 | sout | "round:" | (float)round( 1.5F ) | (double)round( 1.5D ) | (long double)round( 1.5L ); |
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| 36 | sout | "round:" | (long int)round( 1.5F ) | (long int)round( 1.5D ) | (long int)round( 1.5L ); |
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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 ); |
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| 38 | sout | "lround:" | lround( 1.5F ) | lround( 1.5D ) | lround( 1.5L ); |
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| 39 | sout | "llround:" | llround( 1.5F ) | llround( 1.5D ) | llround( 1.5L ); |
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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 ); |
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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 | nonl; |
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| 47 | d = frexp( 4.0D, &exp ); |
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| 48 | sout | d | exp | nonl; |
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| 49 | l = frexp( 4.0L, &exp ); |
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| 50 | sout | l | exp; |
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| 51 | sout | "ldexp:" | ldexp( 2.0F, 2 ) | ldexp( 2.0D, 2 ) | ldexp( 2.0L, 2 ); |
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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 | nonl; |
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| 57 | d = modf( 2.3D, &di ); |
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| 58 | sout | di | d | nonl; |
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| 59 | l = modf( 2.3L, &ldi ); |
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| 60 | sout | ldi | l; |
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| 61 | sout | "modf:" | modf( 2.3F ) | modf( 2.3D ) | modf( 2.3L ); |
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| 62 | sout | "nextafter:" | nextafter( 2.0F, 3.0F ) | nextafter( 2.0D, 3.0D ) | nextafter( 2.0L, 3.0L ); |
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| 63 | sout | "nexttoward:" | nexttoward( 2.0F, 3.0F ) | nexttoward( 2.0D, 3.0D ) | nexttoward( 2.0L, 3.0L ); |
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| 64 | |
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| 65 | sout | "scalbn:" | scalbn( 2.0F, 3 ) | scalbn( 2.0D, 3 ) | scalbn( 2.0L, 3 ); |
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| 66 | sout | "scalbln:" | scalbln( 2.0F, 3L ) | scalbln( 2.0D, 3L ) | scalbln( 2.0L, 3L ); |
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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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