text: /*
   *                               POK header
   *
   * The following file is a part of the POK project. Any modification should
   * be made according to the POK licence. You CANNOT use this file or a part
   * of a file for your own project.
   *
   * For more information on the POK licence, please see our LICENCE FILE
   *
   * Please follow the coding guidelines described in doc/CODING_GUIDELINES
   *
   *                                      Copyright (c) 2007-2020 POK team
   */
  
  /* e_hypotf.c -- float version of e_hypot.c.
   * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
   */
  
  /*
   * ====================================================
   * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   *
   * Developed at SunPro, a Sun Microsystems, Inc. business.
   * Permission to use, copy, modify, and distribute this
   * software is freely granted, provided that this notice
   * is preserved.
   * ====================================================
   */
  
  #ifdef POK_NEEDS_LIBMATH
  
  #include "math_private.h"
  
  float __ieee754_hypotf(float x, float y) {
    float a = x, b = y, t1, t2, yy1, y2, w;
    int32_t j, k, ha, hb;
  
    GET_FLOAT_WORD(ha, x);
    ha &= 0x7fffffff;
    GET_FLOAT_WORD(hb, y);
    hb &= 0x7fffffff;
    if (hb > ha) {
      a = y;
      b = x;
      j = ha;
      ha = hb;
      hb = j;
    } else {
      a = x;
      b = y;
    }
    SET_FLOAT_WORD(a, ha); /* a <- |a| */
    SET_FLOAT_WORD(b, hb); /* b <- |b| */
    if ((ha - hb) > 0xf000000) {
      return a + b;
    } /* x/y > 2**30 */
    k = 0;
    if (ha > 0x58800000) {    /* a>2**50 */
      if (ha >= 0x7f800000) { /* Inf or NaN */
        w = a + b;            /* for sNaN */
        if (ha == 0x7f800000)
          w = a;
        if (hb == 0x7f800000)
          w = b;
        return w;
      }
      /* scale a and b by 2**-60 */
      ha -= 0x5d800000;
      hb -= 0x5d800000;
      k += 60;
      SET_FLOAT_WORD(a, ha);
      SET_FLOAT_WORD(b, hb);
    }
    if (hb < 0x26800000) {    /* b < 2**-50 */
      if (hb <= 0x007fffff) { /* subnormal b or 0 */
        if (hb == 0)
          return a;
        SET_FLOAT_WORD(t1, 0x3f000000); /* t1=2^126 */
        b *= t1;
        a *= t1;
        k -= 126;
      } else {            /* scale a and b by 2^60 */
        ha += 0x5d800000; /* a *= 2^60 */
        hb += 0x5d800000; /* b *= 2^60 */
        k -= 60;
        SET_FLOAT_WORD(a, ha);
        SET_FLOAT_WORD(b, hb);
      }
    }
    /* medium size a and b */
    w = a - b;
    if (w > b) {
      SET_FLOAT_WORD(t1, ha & 0xfffff000);
      t2 = a - t1;
      w = __ieee754_sqrtf(t1 * t1 - (b * (-b) - t2 * (a + t1)));
    } else {
      a = a + a;
      SET_FLOAT_WORD(yy1, hb & 0xfffff000);
      y2 = b - yy1;
      SET_FLOAT_WORD(t1, ha + 0x00800000);
      t2 = a - t1;
      w = __ieee754_sqrtf(t1 * yy1 - (w * (-w) - (t1 * y2 + t2 * b)));
    }
    if (k != 0) {
      SET_FLOAT_WORD(t1, 0x3f800000 + (k << 23));
      return t1 * w;
    } else
      return w;
  }
  #endif
  