| /* |
| * Copyright © 2012 Intel Corporation |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and its |
| * documentation for any purpose is hereby granted without fee, provided that |
| * the above copyright notice appear in all copies and that both that copyright |
| * notice and this permission notice appear in supporting documentation, and |
| * that the name of the copyright holders not be used in advertising or |
| * publicity pertaining to distribution of the software without specific, |
| * written prior permission. The copyright holders make no representations |
| * about the suitability of this software for any purpose. It is provided "as |
| * is" without express or implied warranty. |
| * |
| * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| * OF THIS SOFTWARE. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <assert.h> |
| #include "wayland-private.h" |
| #include "test-runner.h" |
| |
| TEST(fixed_double_conversions) |
| { |
| wl_fixed_t f; |
| double d; |
| |
| d = 62.125; |
| f = wl_fixed_from_double(d); |
| fprintf(stderr, "double %lf to fixed %x\n", d, f); |
| assert(f == 0x3e20); |
| |
| d = -1200.625; |
| f = wl_fixed_from_double(d); |
| fprintf(stderr, "double %lf to fixed %x\n", d, f); |
| assert(f == -0x4b0a0); |
| |
| f = random(); |
| d = wl_fixed_to_double(f); |
| fprintf(stderr, "fixed %x to double %lf\n", f, d); |
| assert(d == f / 256.0); |
| |
| f = 0x012030; |
| d = wl_fixed_to_double(f); |
| fprintf(stderr, "fixed %x to double %lf\n", f, d); |
| assert(d == 288.1875); |
| |
| f = 0x70000000; |
| d = wl_fixed_to_double(f); |
| fprintf(stderr, "fixed %x to double %lf\n", f, d); |
| assert(d == f / 256); |
| |
| f = -0x012030; |
| d = wl_fixed_to_double(f); |
| fprintf(stderr, "fixed %x to double %lf\n", f, d); |
| assert(d == -288.1875); |
| |
| f = 0x80000000; |
| d = wl_fixed_to_double(f); |
| fprintf(stderr, "fixed %x to double %lf\n", f, d); |
| assert(d == f / 256); |
| } |
| |
| TEST(fixed_int_conversions) |
| { |
| wl_fixed_t f; |
| int i; |
| |
| i = 62; |
| f = wl_fixed_from_int(i); |
| assert(f == 62 * 256); |
| |
| i = -2080; |
| f = wl_fixed_from_int(i); |
| assert(f == -2080 * 256); |
| |
| f = 0x277013; |
| i = wl_fixed_to_int(f); |
| assert(i == 0x2770); |
| |
| f = -0x5044; |
| i = wl_fixed_to_int(f); |
| assert(i == -0x50); |
| } |