ashafq

/*
 * Copyright (C) 2019-2025 Ayan Shafqat <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

ashafq

#include <stddef.h>
#include <assert.h>
#include <immintrin.h>

static void v_f32_to_s1x15i(int16_t *dst, const float *src, size_t len)
{
	const __m128 minval = _mm_set1_ps(-1.0F);
	const __m128 maxval = _mm_set1_ps(+0x7fffff8p-27F);
	const __m128 scale  = _mm_set1_ps(32768.0F);

ashafq

/* I always wondered how variable length arguments worked in C.
 * So, I just ended up implementing it in x86.
 * NOTE: THIS CODE BELOW ONLY WORKS IN x86, AND NOT TESTED IN ANY OTHER ARCHITECTURE.
 *
 * To compile:
 * gcc -Wall -o prog vargs.c && ./prog
 * >> Testing: Hello world	10	-100
 */

/*  

ashafq

The source files below should be arranged as:

./main.go
./sqrt/sqrt.s
./sqrt/sqrt.go

To run:

ashafq

#ifndef ABS
#ifdef __GNUC__

#define ABS(x) __extension__({ \
        __builtin_choose_expr( \
        __builtin_types_compatible_p(__typeof__(x), long int), \
        __builtin_labs(x), \
        __builtin_choose_expr( \
        __builtin_types_compatible_p(__typeof__(x), int), \
        __builtin_abs(x), \

ashafq

#!/usr/bin/env bash
#
# This program generates a header file that is needed to figure out number of
# bits in different integer types.
#

header_file=$1
binary=`mktemp`

header_base=`basename "${header_file}"`