/* * SpanDSP - a series of DSP components for telephony * * saturated_tests.c * * Written by Steve Underwood * * Copyright (C) 2004 Steve Underwood * * All rights reserved. * * This program 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 program 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 for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /*! \page saturated_tests_page Saturated arithmetic function tests \section saturated_tests_page_sec_1 What does it do? ???. \section saturated_tests_page_sec_2 How does it work? ???. */ #if defined(HAVE_CONFIG_H) #include "config.h" #endif #include #include #include #define SPANDSP_EXPOSE_INTERNAL_STRUCTURES #include "spandsp.h" int main(int argc, char *argv[]) { printf("Testing 16 bit saturation\n"); if (saturate16(10000) != 10000 || saturate16(-10000) != -10000 || saturate16(32767) != 32767 || saturate16(-32768) != -32768 || saturate16(32768) != 32767 || saturate16(-32769) != -32768) { printf("Test failed.\n"); exit(2); } printf("Testing 15 bit saturation\n"); if (saturate15(10000) != 10000 || saturate15(-10000) != -10000 || saturate15(16383) != 16383 || saturate15(-16384) != -16384 || saturate15(16384) != 16383 || saturate15(-16385) != -16384) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit unsigned saturation\n"); if (saturateu16(10000) != 10000 || saturateu16(32767) != 32767 || saturateu16(65535) != 65535 || saturateu16(65536) != 65535) { printf("Test failed.\n"); exit(2); } printf("Testing 8 bit unsigned saturation\n"); if (saturateu8(100) != 100 || saturateu8(127) != 127 || saturateu8(255) != 255 || saturateu8(256) != 255) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit saturation from float\n"); if (fsaturatef(10000.0f) != 10000 || fsaturatef(-10000.0f) != -10000 || fsaturatef(32767.0f) != 32767 || fsaturatef(-32768.0f) != -32768 || fsaturatef(32768.0f) != 32767 || fsaturatef(-32769.0f) != -32768) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit saturation from double\n"); if (fsaturate(10000.0) != 10000 || fsaturate(-10000.0) != -10000 || fsaturate(32767.0) != 32767 || fsaturate(-32768.0) != -32768 || fsaturate(32768.0) != 32767 || fsaturate(-32769.0) != -32768) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit fast saturation from float\n"); if (ffastsaturatef(10000.0f) != 10000 || ffastsaturatef(-10000.0f) != -10000 || ffastsaturatef(32767.0f) != 32767 || ffastsaturatef(-32768.0f) != -32768 || ffastsaturatef(32768.0f) != 32767 || ffastsaturatef(-32769.0f) != -32768) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit fast saturation from double\n"); if (ffastsaturate(10000.0) != 10000 || ffastsaturate(-10000.0) != -10000 || ffastsaturate(32767.0) != 32767 || ffastsaturate(-32768.0) != -32768 || ffastsaturate(32768.0) != 32767 || ffastsaturate(-32769.0) != -32768) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit float saturation from float\n"); if (ffsaturatef(10000.0f) != 10000.0f || ffsaturatef(-10000.0f) != -10000.0f || ffsaturatef(32767.0f) != 32767.0f || ffsaturatef(-32768.0f) != -32768.0f || ffsaturatef(32768.0f) != 32767.0f || ffsaturatef(-32769.0f) != -32768.0f) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit double saturation from double\n"); if (ffsaturate(10000.0) != 10000.0 || ffsaturate(-10000.0) != -10000.0 || ffsaturate(32767.0) != 32767.0 || ffsaturate(-32768.0) != -32768.0 || ffsaturate(32768.0) != 32767.0 || ffsaturate(-32769.0) != -32768.0) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit add\n"); if (saturated_add16(10000, 10000) != 20000 || saturated_add16(10000, -10000) != 0 || saturated_add16(-10000, 10000) != 0 || saturated_add16(-10000, -10000) != -20000 || saturated_add16(-30000, -30000) != INT16_MIN || saturated_add16(30000, 30000) != INT16_MAX) { printf("Test failed.\n"); exit(2); } printf("Testing 32 bit add\n"); if (saturated_add32(10000, 10000) != 20000 || saturated_add32(10000, -10000) != 0 || saturated_add32(-10000, 10000) != 0 || saturated_add32(-10000, -10000) != -20000 || saturated_add32(-2000000000, -2000000000) != INT32_MIN || saturated_add32(2000000000, 2000000000) != INT32_MAX) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit subtract\n"); if (saturated_sub16(10000, 10000) != 0 || saturated_sub16(10000, -10000) != 20000 || saturated_sub16(-10000, 10000) != -20000 || saturated_sub16(-10000, -10000) != 0 || saturated_sub16(-30000, 30000) != INT16_MIN || saturated_sub16(30000, -30000) != INT16_MAX) { printf("Test failed.\n"); exit(2); } printf("Testing 32 bit subtract\n"); if (saturated_sub32(10000, 10000) != 0 || saturated_sub32(10000, -10000) != 20000 || saturated_sub32(-10000, 10000) != -20000 || saturated_sub32(-10000, -10000) != 0 || saturated_sub32(-2000000000, 2000000000) != INT32_MIN || saturated_sub32(2000000000, -2000000000) != INT32_MAX) { printf("Test failed.\n"); exit(2); } printf("Testing 16 x 16 => 16 bit multiply\n"); if (saturated_mul16(100, 100) != 0 || saturated_mul16(255, 255) != 1 || saturated_mul16(32767, -32768) != -32767 || saturated_mul16(-32768, 32767) != -32767 || saturated_mul16(32767, 32767) != 32766 || saturated_mul16(-32768, -32768) != 32767) { printf("Test failed.\n"); exit(2); } printf("Testing 16 x 16 => 32 bit multiply\n"); if (saturated_mul16_32(100, 100) != 20000 || saturated_mul16_32(-100, 100) != -20000 || saturated_mul16_32(32767, -32768) != -2147418112 || saturated_mul16_32(-32768, 32767) != -2147418112 || saturated_mul16_32(32767, 32767) != 2147352578 || saturated_mul16_32(-32768, -32768) != -2147483648) { printf("Test failed.\n"); exit(2); } printf("Testing 16 bit absolute\n"); if (saturated_abs16(10000) != 10000 || saturated_abs16(-10000) != 10000 || saturated_abs16(32767) != 32767 || saturated_abs16(-32768) != 32767) { printf("Test failed.\n"); exit(2); } printf("Tests passed.\n"); return 0; } /*- End of function --------------------------------------------------------*/ /*- End of file ------------------------------------------------------------*/