ref: 8e7e4ca33d480a4d4441e67d2b99391b57cf7124
dir: /tests/float_short_test.c/
/* ** Copyright (c) 2003-2016, Erik de Castro Lopo <erikd@mega-nerd.com> ** All rights reserved. ** ** This code is released under 2-clause BSD license. Please see the ** file at : https://github.com/libsndfile/libsamplerate/blob/master/COPYING */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <samplerate.h> #include "util.h" #define BUFFER_LEN 10000 static void float_to_short_test (void) ; static void short_to_float_test (void) ; static void float_to_int_test (void) ; static void int_to_float_test (void) ; int main (void) { puts ("") ; float_to_short_test () ; short_to_float_test () ; float_to_int_test () ; int_to_float_test () ; puts ("") ; return 0 ; } /* main */ /*===================================================================================== */ static void float_to_short_test (void) { static float fpos [] = { 0.95f, 0.99f, 1.0f, 1.01f, 1.1f, 2.0f, 11.1f, 111.1f, 2222.2f, 33333.3f, // Some "almost 1" as corner cases (float) (32767.0 / 32768.0), (float) ((32767.0 + 0.4) / 32768.0), (float) ((32767. + 0.5) / 32768.0), (float) ((32767.0 + 0.6) / 32768.0), (float) ((32767.0 + 0.9) / 32768.0), } ; static float fneg [] = { -0.95f, -0.99f, -1.0f, -1.01f, -1.1f, -2.0f, -11.1f, -111.1f, -2222.2f, -33333.3f, // Some "almost 1" as corner cases (float) (-32767.0 / 32768.0), (float) (-(32767.0 + 0.4) / 32768.0), (float) (-(32767.0 + 0.5) / 32768.0), (float) (-(32767.0 + 0.6) / 32768.0), (float) (-(32767.0 + 0.9) / 32768.0), } ; static short out [MAX (ARRAY_LEN (fpos), ARRAY_LEN (fneg))] ; int k ; printf ("\tfloat_to_short_test ............................. ") ; src_float_to_short_array (fpos, out, ARRAY_LEN (fpos)) ; for (k = 0 ; k < ARRAY_LEN (fpos) ; k++) if (out [k] < 30000) { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ; exit (1) ; } ; src_float_to_short_array (fneg, out, ARRAY_LEN (fneg)) ; for (k = 0 ; k < ARRAY_LEN (fneg) ; k++) if (out [k] > -30000) { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ; exit (1) ; } ; puts ("ok") ; return ; } /* float_to_short_test */ /*------------------------------------------------------------------------------------- */ static void short_to_float_test (void) { static short input [BUFFER_LEN] ; static short output [BUFFER_LEN] ; static float temp [BUFFER_LEN] ; int k ; printf ("\tshort_to_float_test ............................. ") ; for (k = 0 ; k < ARRAY_LEN (input) ; k++) input [k] = (k * 0x8000) / ARRAY_LEN (input) ; src_short_to_float_array (input, temp, ARRAY_LEN (temp)) ; src_float_to_short_array (temp, output, ARRAY_LEN (output)) ; for (k = 0 ; k < ARRAY_LEN (input) ; k++) if (ABS (input [k] - output [k]) > 0) { printf ("\n\n\tLine %d : index %d %d -> %d\n", __LINE__, k, input [k], output [k]) ; exit (1) ; } ; puts ("ok") ; return ; } /* short_to_float_test */ /*===================================================================================== */ static void float_to_int_test (void) { static float fpos [] = { 0.95f, 0.99f, 1.0f, 1.01f, 1.1f, 2.0f, 11.1f, 111.1f, 2222.2f, 33333.3f } ; static float fneg [] = { -0.95f, -0.99f, -1.0f, -1.01f, -1.1f, -2.0f, -11.1f, -111.1f, -2222.2f, -33333.3f } ; static int out [MAX (ARRAY_LEN (fpos), ARRAY_LEN (fneg))] ; int k ; printf ("\tfloat_to_int_test ............................... ") ; src_float_to_int_array (fpos, out, ARRAY_LEN (fpos)) ; for (k = 0 ; k < ARRAY_LEN (fpos) ; k++) if (out [k] < 30000 * 0x10000) { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ; exit (1) ; } ; src_float_to_int_array (fneg, out, ARRAY_LEN (fneg)) ; for (k = 0 ; k < ARRAY_LEN (fneg) ; k++) if (out [k] > -30000 * 0x1000) { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ; exit (1) ; } ; puts ("ok") ; return ; } /* float_to_int_test */ /*------------------------------------------------------------------------------------- */ static void int_to_float_test (void) { static int input [BUFFER_LEN] ; static int output [BUFFER_LEN] ; static float temp [BUFFER_LEN] ; int k ; printf ("\tint_to_float_test ............................... ") ; for (k = 0 ; k < ARRAY_LEN (input) ; k++) input [k] = (k * 0x80000000) / ARRAY_LEN (input) ; src_int_to_float_array (input, temp, ARRAY_LEN (temp)) ; src_float_to_int_array (temp, output, ARRAY_LEN (output)) ; for (k = 0 ; k < ARRAY_LEN (input) ; k++) if (ABS (input [k] - output [k]) > 0) { printf ("\n\n\tLine %d : index %d %d -> %d\n", __LINE__, k, input [k], output [k]) ; exit (1) ; } ; puts ("ok") ; return ; } /* int_to_float_test */