Index: fusl/src/math/nextafter.c |
diff --git a/fusl/src/math/nextafter.c b/fusl/src/math/nextafter.c |
index ab5795a47a93e36c8c461d8a4be6621b582ae077..8f51f95341327f5822467114957bc592fa98c181 100644 |
--- a/fusl/src/math/nextafter.c |
+++ b/fusl/src/math/nextafter.c |
@@ -1,31 +1,33 @@ |
#include "libm.h" |
-double nextafter(double x, double y) |
-{ |
- union {double f; uint64_t i;} ux={x}, uy={y}; |
- uint64_t ax, ay; |
- int e; |
+double nextafter(double x, double y) { |
+ union { |
+ double f; |
+ uint64_t i; |
+ } ux = {x}, uy = {y}; |
+ uint64_t ax, ay; |
+ int e; |
- if (isnan(x) || isnan(y)) |
- return x + y; |
- if (ux.i == uy.i) |
- return y; |
- ax = ux.i & -1ULL/2; |
- ay = uy.i & -1ULL/2; |
- if (ax == 0) { |
- if (ay == 0) |
- return y; |
- ux.i = (uy.i & 1ULL<<63) | 1; |
- } else if (ax > ay || ((ux.i ^ uy.i) & 1ULL<<63)) |
- ux.i--; |
- else |
- ux.i++; |
- e = ux.i >> 52 & 0x7ff; |
- /* raise overflow if ux.f is infinite and x is finite */ |
- if (e == 0x7ff) |
- FORCE_EVAL(x+x); |
- /* raise underflow if ux.f is subnormal or zero */ |
- if (e == 0) |
- FORCE_EVAL(x*x + ux.f*ux.f); |
- return ux.f; |
+ if (isnan(x) || isnan(y)) |
+ return x + y; |
+ if (ux.i == uy.i) |
+ return y; |
+ ax = ux.i & -1ULL / 2; |
+ ay = uy.i & -1ULL / 2; |
+ if (ax == 0) { |
+ if (ay == 0) |
+ return y; |
+ ux.i = (uy.i & 1ULL << 63) | 1; |
+ } else if (ax > ay || ((ux.i ^ uy.i) & 1ULL << 63)) |
+ ux.i--; |
+ else |
+ ux.i++; |
+ e = ux.i >> 52 & 0x7ff; |
+ /* raise overflow if ux.f is infinite and x is finite */ |
+ if (e == 0x7ff) |
+ FORCE_EVAL(x + x); |
+ /* raise underflow if ux.f is subnormal or zero */ |
+ if (e == 0) |
+ FORCE_EVAL(x * x + ux.f * ux.f); |
+ return ux.f; |
} |