source: tests/array-collections/array-sbscr-types.cfa@ e0330d2c

#include <collections/array.hfa>

// Shows support for many required ways a user can index into a new array.
//
// A successful run of this test on 32 bit is necessary, before concluding
// that a relevant change has good quality.  Even though the test has no 
// differentiated 64/32-bit versions.
//
// Repetition, within this test, beween indexing directly into an `array(...)`
// and indexing into a `A`, as in `forall(A...|ar(A...))`, represents indexing
// into a (statically programmer-known) contiguous view, and a (potentially)
// noncontiguous view, respectively.  Users obtain noncontiguous views by
// slicing or transposing higher-dimensional arrays.  The limited uses of
// `a[..., all, ...]` within this test create such situations.  Working via
// the `ar` trait is the first of two ways that users depend on the array
// implementation tunneling subscript operators through the CFA assertion
// system.
//
// This test uses the `a[i,j]` form for subscriping higher-dimensional arrays,
// which is the "new" form, compared with the C-style `a[i][j]` form.  The
// "new" subscripting form is the second of two ways that users depend on the
// array implementation tunneling subscript operators through the CFA
// assertion system.
//
// This test covers types and syntactic forms that can convey a numeric value
// to `a[-]` or `a[-,-,-]`.  The array-md-sbscr-cases test covers combinations
// of `a[i][j,k]` vs `a[i,j,k]` and `a[all,3][42]` vs `a[42,3]`, though
// generally using ptrdiff_t-typed variables to convey numeric values.

#include <assert.h>

#define show( expr ) printf( "%.1f\n", expr )

#define singleDimTestBody(testName) {                      \
                                                           \
    printf(testName "\n\n");                               \
                                                           \
    assert( 3 < N );                                       \
                                                           \
    show( a[i1] );                                         \
    show( a[i2] );                                         \
    printf("\n");                                          \
                                                           \
    for( i_dynbounded; N ) show( a[i_dynbounded] );        \
    printf("\n");                                          \
                                                           \
    for( i_stabounded; 4 ) show( a[i_stabounded] );        \
    printf("\n");                                          \
}

forall( [N] )
void test_common_arg_types(array(float, N) & a, ptrdiff_t i1, size_t i2)
    singleDimTestBody("Simple array")

forall( [N], A& | ar(A, float, N) )
void test_common_arg_types__via_trait(A & a, ptrdiff_t i1, size_t i2)
    singleDimTestBody("Via trait")

void do1dimTest() {
    array(float, 5) a;
    a[0] = 100.0;
    a[1] = 100.1;
    a[2] = 100.2;
    a[3] = 100.3;
    a[4] = 100.4;

    test_common_arg_types(a, 3, 3);
    test_common_arg_types__via_trait(a, 3, 3);
}

#define multiDimTestBody(testName) {                         \
                                                             \
    printf(testName "\n\n");                                 \
                                                             \
    assert( 3 < M );                                         \
    assert( 3 < N );                                         \
                                                             \
    show(( a[x1,x1] ));                                      \
    show(( a[x1,x2] ));                                      \
    show(( a[x2,x1] ));                                      \
    show(( a[x2,x2] ));                                      \
    printf("\n");                                            \
                                                             \
    for( i_dynbounded; M ) show(( a[i_dynbounded, 3] ));     \
    printf("\n");                                            \
                                                             \
    for( i_stabounded; 4 ) show(( a[i_stabounded, 3] ));     \
    printf("\n");                                            \
                                                             \
    for( j_dynbounded; N ) show(( a[3, j_dynbounded] ));     \
    printf("\n");                                            \
                                                             \
    for( j_stabounded; 4 ) show(( a[3, j_stabounded] ));     \
    printf("\n");                                            \
}

forall( [M], [N] )
void test_common_arg_types__md(array(float, M, N) & a, ptrdiff_t x1, size_t x2)
    multiDimTestBody("Simple array, multidim")


forall( [M], [N], A_outer &, A_inner & | ar(A_outer, A_inner, M) | ar(A_inner, float, N) )
void test_common_arg_types__md__via_trait(A_outer & a, ptrdiff_t x1, size_t x2)
    multiDimTestBody("Via trait, multidim")


void doMdimTest() {

    array(float, 5, 4) b;
    b[ix0,ix0] = 0.0; b[ix0,1] = 0.1; b[ix0,2] = 0.2; b[ix0,3] = 0.3;
    b[  1,ix0] = 1.0; b[  1,1] = 1.1; b[  1,2] = 1.2; b[  1,3] = 1.3;
    b[  2,ix0] = 2.0; b[  2,1] = 2.1; b[  2,2] = 2.2; b[  2,3] = 2.3;
    b[  3,ix0] = 3.0; b[  3,1] = 3.1; b[  3,2] = 3.2; b[  3,3] = 3.3;
    b[  4,ix0] = 4.0; b[  4,1] = 4.1; b[  4,2] = 4.2; b[  4,3] = 4.3;

    test_common_arg_types__md(b, 3, 3);
    test_common_arg_types__md__via_trait(b, 3, 3);
    printf("Transposed, ");
    test_common_arg_types__md__via_trait(b[all], 3, 3);

    printf("Slice giving ");
    test_common_arg_types(b[2], 3, 3);

    printf("Same slice ");
    test_common_arg_types__via_trait(b[2], 3, 3);

    printf("Strided slice ");
    test_common_arg_types__via_trait(b[all,2], 3, 3);
}

int main() {

    // can't be inlined in same func due to Trac #175.
    do1dimTest();
    doMdimTest();
}