/* Copyright (c) 1997-2001 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */

/*  mathematical functions and other transfer functions, including tilde
    versions of stuff from x_acoustics.c.
*/

#include "d_math.h"

    /* these are used in externs like "bonk" */

t_float q8_rsqrt(t_float f)
{
    long l = *(long *)(&f);
    if (f < 0) return (0);
    else return (rsqrt_exptab[(l >> 23) & 0xff] *
            rsqrt_mantissatab[(l >> 13) & 0x3ff]);
}

t_float q8_sqrt(t_float f)
{
    long l = *(long *)(&f);
    if (f < 0) return (0);
    else return (f * rsqrt_exptab[(l >> 23) & 0xff] *
            rsqrt_mantissatab[(l >> 13) & 0x3ff]);
}

    /* the old names are OK unless we're in IRIX N32 */

#ifndef N32
t_float qsqrt(t_float f) {return (q8_sqrt(f)); }
t_float qrsqrt(t_float f) {return (q8_rsqrt(f)); }
#endif