Viewing file:  pragma-float-const-decimal64-1.c (1.46 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-Wall" } */
/* N1312 7.1.1: The FLOAT_CONST_DECIMAL64 pragma.
C99 6.4.4.2a (New).
Verify that the pragma has the expected result by using unsuffixed
float constants as operands in expressions that would mix binary and
decimal operands if the pragma had no effect, or the wrong effect. */
#pragma STDC FLOAT_CONST_DECIMAL64 ON
double a = 1.0 * 2.0dd;
double
f1 (void)
{
#pragma STDC FLOAT_CONST_DECIMAL64 OFF
double b = 2.0 * 3.0d;
{
double c = 3.0 * 4.0d;
b = b + c;
}
{
#pragma STDC FLOAT_CONST_DECIMAL64 ON
double d = 4.0 * 5.0dd;
b = b + d;
}
{
/* Default is OFF. */
#pragma STDC FLOAT_CONST_DECIMAL64 DEFAULT
double e = 5.0 * 6.0d;
b = b + e;
}
return b;
}
double
f2 (void)
{
/* Use value from outer scope, which is ON. */
double b = 2.0 * 3.0dd;
{
#pragma STDC FLOAT_CONST_DECIMAL64 OFF
double c = 3.0 * 4.0d;
{
#pragma STDC FLOAT_CONST_DECIMAL64 ON
double d = 4.0 * 5.0dd;
{
#pragma STDC FLOAT_CONST_DECIMAL64 DEFAULT
double e = 5.0 * 6.0d;
{
#pragma STDC FLOAT_CONST_DECIMAL64 ON
double f = 6.0 * 7.0dd;
b = a + b + c + d + e + f;
}
}
}
}
return b;
}
/* Use previous value from this scope, which is ON. */
double f = 6.0 * 7.0dd;
double
f3 (void)
{
#pragma STDC FLOAT_CONST_DECIMAL64 OFF
double b = 2.0 * 3.0d;
return b + f;
}
/* Return to the state from this scope, which is ON. */
double g = 7.0 + 8.0dd;
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