| /* Copyright (C) 2003 Free Software Foundation. |
| |
| Check that constant folding of built-in math functions doesn't |
| break anything and produces the expected results. |
| |
| Written by Roger Sayle, 5th April 2003. */ |
| |
| /* { dg-do link } */ |
| /* { dg-options "-O2 -ffast-math" } */ |
| |
| extern void link_error(void); |
| |
| extern double exp(double); |
| extern double sqrt(double); |
| extern double pow(double,double); |
| |
| void test(double x, double y, double z) |
| { |
| if (sqrt(x)*sqrt(x) != x) |
| link_error (); |
| |
| if (sqrt(x)*sqrt(y) != sqrt(x*y)) |
| link_error (); |
| |
| if (exp(x)*exp(y) != exp(x+y)) |
| link_error (); |
| |
| if (pow(x,y)*pow(z,y) != pow(z*x,y)) |
| link_error (); |
| |
| if (pow(x,y)*pow(x,z) != pow(x,y+z)) |
| link_error (); |
| |
| if (x/exp(y) != x*exp(-y)) |
| link_error (); |
| |
| if (x/pow(y,z) != x*pow(y,-z)) |
| link_error (); |
| } |
| |
| int main() |
| { |
| test (2.0, 3.0, 4.0); |
| return 0; |
| } |
| |
