gcc/testsuite/gcc.dg/builtins-38.c

   1 /* Copyright (C) 2004 Free Software Foundation.
   2
   3    Check that logb, logbf, logbl, ilogb, ilogbf and ilogbl
   4    built-in functions compile.
   5
   6    Written by Uros Bizjak, 14th April 2004.  */
   7
   8 /* { dg-do compile } */
   9 /* { dg-options "-O2 -ffast-math" } */
  10
  11 extern double logb(double);
  12 extern float logbf(float);
  13 extern long double logbl(long double);
  14 extern int ilogb(double);
  15 extern int ilogbf(float);
  16 extern int ilogbl(long double);
  17
  18
  19 double test1(double x)
  20 {
  21   return logb(x);
  22 }
  23
  24 float test1f(float x)
  25 {
  26   return logbf(x);
  27 }
  28
  29 long double test1l(long double x)
  30 {
  31   return logbl(x);
  32 }
  33
  34 int test2(double x)
  35 {
  36   return ilogb(x);
  37 }
  38
  39 int test2f(float x)
  40 {
  41   return ilogbf(x);
  42 }
  43
  44 int test2l(long double x)
  45 {
  46   return ilogbl(x);
  47 }
  48