62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/* Area: ffi_call
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Purpose: Check return value long double.
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Limitations: none.
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PR: none.
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Originator: From the original ffitest.c */
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/* { dg-do run } */
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#include "ffitest.h"
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#include "float.h"
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#include <math.h>
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static long double ldblit(float f)
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{
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return (long double) (((long double) f)/ (long double) 3.0);
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}
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int main (void)
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{
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ffi_cif cif;
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ffi_type *args[MAX_ARGS];
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void *values[MAX_ARGS];
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float f;
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long double ld;
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long double original;
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args[0] = &ffi_type_float;
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values[0] = &f;
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/* Initialize the cif */
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CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
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&ffi_type_longdouble, args) == FFI_OK);
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f = 3.14159;
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#if defined(__sun) && defined(__GNUC__)
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/* long double support under SunOS/gcc is pretty much non-existent.
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You'll get the odd bus error in library routines like printf() */
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#else
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printf ("%Lf\n", ldblit(f));
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#endif
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ld = 666;
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ffi_call(&cif, FFI_FN(ldblit), &ld, values);
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#if defined(__sun) && defined(__GNUC__)
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/* long double support under SunOS/gcc is pretty much non-existent.
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You'll get the odd bus error in library routines like printf() */
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#else
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printf ("%Lf, %Lf, %Lf, %Lf\n", ld, ldblit(f), ld - ldblit(f), LDBL_EPSILON);
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#endif
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/* These are not always the same!! Check for a reasonable delta */
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original = ldblit(f);
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if (((ld > original) ? (ld - original) : (original - ld)) < LDBL_EPSILON)
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puts("long double return value tests ok!");
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else
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CHECK(0);
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exit(0);
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}
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