gcc/testsuite/gcc.dg/float-range-5.c

   1 /* PR 23572 : warnings for out of range floating-point constants
   2    Test that they are NOT pedantic warnings.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-pedantic-errors -std=c99" } */
   5 /* { dg-skip-if "No Inf support" { spu-*-* } } */
   6 #include <math.h>
   7
   8 #ifndef INFINITY
   9 #define INFINITY (__builtin_inff ())
  10 #endif
  11
  12 void overflow(void)
  13 {
  14   float f1 = 3.5E+38f;  /* { dg-warning "floating constant exceeds range" } */
  15   float f2 = -3.5E+38f; /* { dg-warning "floating constant exceeds range" } */
  16   float f3 = INFINITY;
  17   float f4 = -INFINITY;
  18
  19   double d1 = 1.9E+308;  /* { dg-warning "floating constant exceeds range" } */
  20   double d2 = -1.9E+308; /* { dg-warning "floating constant exceeds range" } */
  21   double d3 = INFINITY;
  22   double d4 = -INFINITY;
  23 }
  24
  25 void underflow(void)
  26 {
  27   float f11 = 3.3E-10000000000000000000f;  /* { dg-warning "floating constant truncated to zero" } */
  28   float f22 = -3.3E-10000000000000000000f; /* { dg-warning "floating constant truncated to zero" } */
  29   float f1 = 3.3E-46f;  /* { dg-warning "floating constant truncated to zero" } */
  30   float f2 = -3.3E-46f; /* { dg-warning "floating constant truncated to zero" } */
  31   float f3 = 0;
  32   float f4 = -0;
  33   float f5 = 0.0;
  34   float f6 = -0.0;
  35
  36   double d11 = 3.3E-10000000000000000000;  /* { dg-warning "floating constant truncated to zero" } */
  37   double d22 = -3.3E-10000000000000000000; /* { dg-warning "floating constant truncated to zero" } */
  38   double d1 = 1.4E-325;  /* { dg-warning "floating constant truncated to zero" } */
  39   double d2 = -1.4E-325; /* { dg-warning "floating constant truncated to zero" } */
  40   double d3 = 0;
  41   double d4 = -0;
  42   double d5 = 0.0;
  43   double d6 = -0.0;
  44 }