source: doc/theses/mike_brooks_MMath/programs/hello-md.cfa@ b26ab30

Last change on this file since b26ab30 was caa3e2c, checked in by Peter A. Buhr <pabuhr@…>, 14 months ago

proofread array chapter and update example programs

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File size: 1.4 KB
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1#include <fstream.hfa>
2#include <array.hfa>
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40forall( [N] )
41void print1d_cstyle( array( float, N ) & r ); $\C{// C style}$
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43forall( [N], C & @| ar( C, float, N )@ ) $\C{// add trait}$
44void print1d( C & c );
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60forall( [N] )
61void print1d_cstyle( array( float, N ) & r ) { $\C{// C style}$
62 for ( i; N ) sout | r[i] | nonl;
63 sout | nl;
64}
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79forall( [N], C & | ar( C, float, N ) )
80void print1d( C & c ) {
81 for( i; N ) {
82 sout | c[i] | nonl;
83 }
84 sout | nl;
85}
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100void fill( array( float, 5, 7 ) & a ) {
101 for ( i; (ptrdiff_t) 5 ) {
102 for ( j; 7 ) {
103 a[i,j] = 1.0 * i + 0.1 * j;
104 sout | a[[i,j]] | nonl;
105 }
106 sout | nl;
107 }
108 sout | nl;
109}
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111int main() {
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118array( float, 5, 7 ) m;
119fill( m );
120/*
121r/c 0 1 2 3 4 5 6
1220 0.0 0.1 0.2 @0.3@ 0.4 0.5 0.6
1231 1.0 1.1 1.2 @1.3@ 1.4 1.5 1.6
1242 @2.0 2.1 2.2 2.3 2.4 2.5 2.6@
1253 3.0 3.1 3.2 @3.3@ 3.4 3.5 3.6
1264 4.0 4.1 4.2 @4.3@ 4.4 4.5 4.6
127*/
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140print1d_cstyle( @m[ 2 ]@ ); $\C{// row 2: 2.0 2.1 2.2 2.3 2.4 2.5 2.6}$
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145print1d( m[ 2 ] ); $\C{// row: 2.0 2.1 2.2 2.3 2.4 2.5 2.6}$
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150print1d( m[ 2, all ] ); $\C{// row 2: 2.0 2.1 2.2 2.3 2.4 2.5 2.6}$
151print1d( m[ all, 3 ] ); $\C{// column 3: 0.3 1.3 2.3 3.3 4.3}$
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155print1d_cstyle( m[ 2, all ] );
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163#ifdef SHOW_ERROR_1
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165print1d_cstyle( m[ all, 2 ] ); $\C{// bad}$
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167#endif
168
169}
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