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/**************************************************************************/
/* */
/* The Why platform for program certification */
/* Copyright (C) 2002-2008 */
/* Romain BARDOU */
/* Jean-Franois COUCHOT */
/* Mehdi DOGGUY */
/* Jean-Christophe FILLITRE */
/* Thierry HUBERT */
/* Claude MARCH */
/* Yannick MOY */
/* Christine PAULIN */
/* Yann RGIS-GIANAS */
/* Nicolas ROUSSET */
/* Xavier URBAIN */
/* */
/* This software is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public */
/* License version 2, as published by the Free Software Foundation. */
/* */
/* This software is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. */
/* */
/* See the GNU General Public License version 2 for more details */
/* (enclosed in the file GPL). */
/* */
/**************************************************************************/
/* The following functions are not intended to be correct;
this is only a test file for the syntax and the typing of floating-point
annotations */
const float ff = -(1 / (85 / (float)99));
float f;
double d;
long double l = 123.L;
/*@ requires -f == -0 + (int)1.0 + 2.0
@ ensures d >= 1 - 2.34
@*/
void f1() {
f = (float)1 + (int)1.2;
d = -f + 1.0 + 12.L;
l = f + d + (long double)3;
}
/*@ requires x == \exact(x) && | x | <= 1
@ ensures \round_error(\result) <= 2 ^^ (-48)
@*/
double my_exp(double x) {
return 1 + x + x*x/2;
}
/*@ requires \model(x) == 0.0
@ ensures \total_error(\result) <= 0.1
@*/
double f2(double x) {
return x + 1.0f + 2 * 3.14 / 3.6l;
}
/*@ requires x == y
@ ensures \result == 1
@*/
double f3(double x, float y) {
long double z;
if (x < y ) z = y; else z = x;
return z;
}
/*@ ensures \result == 2 ^^ 40
@*/
double f4(double x) {
return x;
}
//@ logic real f_double_to_real(double x)
/*@ ensures \result == f_double_to_real(x) */
double f5(double x) {
return x - 1;
}
/*@ ensures \result == -(1.0) */
double f6(double x) { return -1.0; }
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