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