gcc/libffi/testsuite/libffi.call/many_double.c

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/* Area: ffi_call
Purpose: Check return value double, with many arguments
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run } */
#include "ffitest.h"
#include <stdlib.h>
#include <float.h>
#include <math.h>
static double many(double f1,
double f2,
double f3,
double f4,
double f5,
double f6,
double f7,
double f8,
double f9,
double f10,
double f11,
double f12,
double f13)
{
#if 0
printf("%f %f %f %f %f %f %f %f %f %f %f %f %f\n",
(double) f1, (double) f2, (double) f3, (double) f4, (double) f5,
(double) f6, (double) f7, (double) f8, (double) f9, (double) f10,
(double) f11, (double) f12, (double) f13);
#endif
return ((f1/f2+f3/f4+f5/f6+f7/f8+f9/f10+f11/f12) * f13);
}
int main (void)
{
ffi_cif cif;
ffi_type *args[13];
void *values[13];
double fa[13];
double f, ff;
int i;
for (i = 0; i < 13; i++)
{
args[i] = &ffi_type_double;
values[i] = &fa[i];
fa[i] = (double) i;
}
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 13,
&ffi_type_double, args) == FFI_OK);
ffi_call(&cif, FFI_FN(many), &f, values);
ff = many(fa[0], fa[1],
fa[2], fa[3],
fa[4], fa[5],
fa[6], fa[7],
fa[8], fa[9],
fa[10],fa[11],fa[12]);
if (fabs(f - ff) < FLT_EPSILON)
exit(0);
else
abort();
}