source: doc/theses/mike_brooks_MMath/programs/hello-md.cfa @ 86841ee

Last change on this file since 86841ee was caa3e2c, checked in by Peter A. Buhr <pabuhr@…>, 3 months ago

proofread array chapter and update example programs

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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 ] );  $\C{// bad}$
166
167#endif
168
169}
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