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/*
* The MIT License
*
* Wavefront Alignment Algorithms
* Copyright (c) 2017 by Santiago Marco-Sola <santiagomsola@gmail.com>
*
* This file is part of Wavefront Alignment Algorithms.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* PROJECT: Wavefront Alignment Algorithms
* AUTHOR(S): Santiago Marco-Sola <santiagomsola@gmail.com>
* DESCRIPTION: Common functions/utilities and headers for C development
*/
#include "commons.h"
/*
* Random number generator [min,max)
*/
uint64_t rand_iid(
const uint64_t min,
const uint64_t max) {
const int n_rand = rand(); // [0, RAND_MAX]
const uint64_t range = max - min;
const uint64_t rem = RAND_MAX % range;
const uint64_t sample = RAND_MAX / range;
// Consider the small interval within remainder of RAND_MAX
if (n_rand < RAND_MAX - rem) {
return min + n_rand/sample;
} else {
return rand_iid(min,max);
}
}
/*
* Math
*/
uint32_t nominal_prop_u32(
const uint32_t base,
const double factor) {
if (0.0 <= factor && factor <= 1.0) {
return (uint32_t)((double)base*factor);
} else {
return (uint32_t)factor;
}
}
uint64_t nominal_prop_u64(
const uint64_t base,
const double factor) {
if (0.0 <= factor && factor <= 1.0) {
return (uint64_t)((double)base*factor);
} else {
return (uint64_t)factor;
}
}
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