| 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 | // math3.c --
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| 8 | //
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| 9 | // Author : Peter A. Buhr
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| 10 | // Created On : Fri Apr 22 14:59:21 2016
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Fri Aug 11 15:40:03 2017
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| 13 | // Update Count : 81
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| 14 | //
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| 15 |
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| 16 | #include <fstream>
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| 17 | #include <math>
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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.c" //
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| 72 | // End: //
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