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Unified Diff: fusl/src/math/remquol.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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Index: fusl/src/math/remquol.c
diff --git a/fusl/src/math/remquol.c b/fusl/src/math/remquol.c
index 9b065c007f56e573a9d2dbb5a91fadd919cf290c..d4cf47feddbf594bb7fc060ddcec998bf4c10eea 100644
--- a/fusl/src/math/remquol.c
+++ b/fusl/src/math/remquol.c
@@ -1,124 +1,124 @@
#include "libm.h"
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
-long double remquol(long double x, long double y, int *quo)
-{
- return remquo(x, y, quo);
+long double remquol(long double x, long double y, int* quo) {
+ return remquo(x, y, quo);
}
#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
-long double remquol(long double x, long double y, int *quo)
-{
- union ldshape ux = {x}, uy = {y};
- int ex = ux.i.se & 0x7fff;
- int ey = uy.i.se & 0x7fff;
- int sx = ux.i.se >> 15;
- int sy = uy.i.se >> 15;
- uint32_t q;
+long double remquol(long double x, long double y, int* quo) {
+ union ldshape ux = {x}, uy = {y};
+ int ex = ux.i.se & 0x7fff;
+ int ey = uy.i.se & 0x7fff;
+ int sx = ux.i.se >> 15;
+ int sy = uy.i.se >> 15;
+ uint32_t q;
- *quo = 0;
- if (y == 0 || isnan(y) || ex == 0x7fff)
- return (x*y)/(x*y);
- if (x == 0)
- return x;
+ *quo = 0;
+ if (y == 0 || isnan(y) || ex == 0x7fff)
+ return (x * y) / (x * y);
+ if (x == 0)
+ return x;
- /* normalize x and y */
- if (!ex) {
- ux.i.se = ex;
- ux.f *= 0x1p120f;
- ex = ux.i.se - 120;
- }
- if (!ey) {
- uy.i.se = ey;
- uy.f *= 0x1p120f;
- ey = uy.i.se - 120;
- }
+ /* normalize x and y */
+ if (!ex) {
+ ux.i.se = ex;
+ ux.f *= 0x1p120f;
+ ex = ux.i.se - 120;
+ }
+ if (!ey) {
+ uy.i.se = ey;
+ uy.f *= 0x1p120f;
+ ey = uy.i.se - 120;
+ }
- q = 0;
- if (ex >= ey) {
- /* x mod y */
+ q = 0;
+ if (ex >= ey) {
+/* x mod y */
#if LDBL_MANT_DIG == 64
- uint64_t i, mx, my;
- mx = ux.i.m;
- my = uy.i.m;
- for (; ex > ey; ex--) {
- i = mx - my;
- if (mx >= my) {
- mx = 2*i;
- q++;
- q <<= 1;
- } else if (2*mx < mx) {
- mx = 2*mx - my;
- q <<= 1;
- q++;
- } else {
- mx = 2*mx;
- q <<= 1;
- }
- }
- i = mx - my;
- if (mx >= my) {
- mx = i;
- q++;
- }
- if (mx == 0)
- ex = -120;
- else
- for (; mx >> 63 == 0; mx *= 2, ex--);
- ux.i.m = mx;
+ uint64_t i, mx, my;
+ mx = ux.i.m;
+ my = uy.i.m;
+ for (; ex > ey; ex--) {
+ i = mx - my;
+ if (mx >= my) {
+ mx = 2 * i;
+ q++;
+ q <<= 1;
+ } else if (2 * mx < mx) {
+ mx = 2 * mx - my;
+ q <<= 1;
+ q++;
+ } else {
+ mx = 2 * mx;
+ q <<= 1;
+ }
+ }
+ i = mx - my;
+ if (mx >= my) {
+ mx = i;
+ q++;
+ }
+ if (mx == 0)
+ ex = -120;
+ else
+ for (; mx >> 63 == 0; mx *= 2, ex--)
+ ;
+ ux.i.m = mx;
#elif LDBL_MANT_DIG == 113
- uint64_t hi, lo, xhi, xlo, yhi, ylo;
- xhi = (ux.i2.hi & -1ULL>>16) | 1ULL<<48;
- yhi = (uy.i2.hi & -1ULL>>16) | 1ULL<<48;
- xlo = ux.i2.lo;
- ylo = ux.i2.lo;
- for (; ex > ey; ex--) {
- hi = xhi - yhi;
- lo = xlo - ylo;
- if (xlo < ylo)
- hi -= 1;
- if (hi >> 63 == 0) {
- xhi = 2*hi + (lo>>63);
- xlo = 2*lo;
- q++;
- } else {
- xhi = 2*xhi + (xlo>>63);
- xlo = 2*xlo;
- }
- q <<= 1;
- }
- hi = xhi - yhi;
- lo = xlo - ylo;
- if (xlo < ylo)
- hi -= 1;
- if (hi >> 63 == 0) {
- xhi = hi;
- xlo = lo;
- q++;
- }
- if ((xhi|xlo) == 0)
- ex = -120;
- else
- for (; xhi >> 48 == 0; xhi = 2*xhi + (xlo>>63), xlo = 2*xlo, ex--);
- ux.i2.hi = xhi;
- ux.i2.lo = xlo;
+ uint64_t hi, lo, xhi, xlo, yhi, ylo;
+ xhi = (ux.i2.hi & -1ULL >> 16) | 1ULL << 48;
+ yhi = (uy.i2.hi & -1ULL >> 16) | 1ULL << 48;
+ xlo = ux.i2.lo;
+ ylo = ux.i2.lo;
+ for (; ex > ey; ex--) {
+ hi = xhi - yhi;
+ lo = xlo - ylo;
+ if (xlo < ylo)
+ hi -= 1;
+ if (hi >> 63 == 0) {
+ xhi = 2 * hi + (lo >> 63);
+ xlo = 2 * lo;
+ q++;
+ } else {
+ xhi = 2 * xhi + (xlo >> 63);
+ xlo = 2 * xlo;
+ }
+ q <<= 1;
+ }
+ hi = xhi - yhi;
+ lo = xlo - ylo;
+ if (xlo < ylo)
+ hi -= 1;
+ if (hi >> 63 == 0) {
+ xhi = hi;
+ xlo = lo;
+ q++;
+ }
+ if ((xhi | xlo) == 0)
+ ex = -120;
+ else
+ for (; xhi >> 48 == 0; xhi = 2 * xhi + (xlo >> 63), xlo = 2 * xlo, ex--)
+ ;
+ ux.i2.hi = xhi;
+ ux.i2.lo = xlo;
#endif
- }
+ }
- /* scale result and decide between |x| and |x|-|y| */
- if (ex <= 0) {
- ux.i.se = ex + 120;
- ux.f *= 0x1p-120f;
- } else
- ux.i.se = ex;
- x = ux.f;
- if (sy)
- y = -y;
- if (ex == ey || (ex+1 == ey && (2*x > y || (2*x == y && q%2)))) {
- x -= y;
- q++;
- }
- q &= 0x7fffffff;
- *quo = sx^sy ? -(int)q : (int)q;
- return sx ? -x : x;
+ /* scale result and decide between |x| and |x|-|y| */
+ if (ex <= 0) {
+ ux.i.se = ex + 120;
+ ux.f *= 0x1p-120f;
+ } else
+ ux.i.se = ex;
+ x = ux.f;
+ if (sy)
+ y = -y;
+ if (ex == ey || (ex + 1 == ey && (2 * x > y || (2 * x == y && q % 2)))) {
+ x -= y;
+ q++;
+ }
+ q &= 0x7fffffff;
+ *quo = sx ^ sy ? -(int)q : (int)q;
+ return sx ? -x : x;
}
#endif

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