- EXTRACT_WORDS(i0, i1, x);
- j0 = ((i0>>20) & 0x7ff) - 0x3ff; /* exponent of x */
- if (j0 < 20) { /* integer part in high x */
- if (j0 < 0) { /* |x| < 1 */
- INSERT_WORDS(*iptr, i0 & 0x80000000, 0); /* *iptr = +-0 */
- return x;
- }
- i = 0x000fffff >> j0;
- if (((i0&i)|i1) == 0) { /* x is integral */
- uint32_t high;
- *iptr = x;
- GET_HIGH_WORD(high, x);
- INSERT_WORDS(x, high & 0x80000000, 0); /* return +-0 */
- return x;
- }
- INSERT_WORDS(*iptr, i0&~i, 0);
- return x - *iptr;
- } else if (j0 > 51) { /* no fraction part */
- uint32_t high;
- if (j0 == 0x400) { /* inf/NaN */
- *iptr = x;
- return 0.0 / x;
- }