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Unified Diff: fusl/src/math/atanh.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/atanh.c
diff --git a/fusl/src/math/atanh.c b/fusl/src/math/atanh.c
index 63a035d7063ae2d5df2c31728e10e5d471209c79..291cf15fa35514a717c0c2cd78cd36057fa08c21 100644
--- a/fusl/src/math/atanh.c
+++ b/fusl/src/math/atanh.c
@@ -1,29 +1,31 @@
#include "libm.h"
/* atanh(x) = log((1+x)/(1-x))/2 = log1p(2x/(1-x))/2 ~= x + x^3/3 + o(x^5) */
-double atanh(double x)
-{
- union {double f; uint64_t i;} u = {.f = x};
- unsigned e = u.i >> 52 & 0x7ff;
- unsigned s = u.i >> 63;
- double_t y;
+double atanh(double x) {
+ union {
+ double f;
+ uint64_t i;
+ } u = {.f = x};
+ unsigned e = u.i >> 52 & 0x7ff;
+ unsigned s = u.i >> 63;
+ double_t y;
- /* |x| */
- u.i &= (uint64_t)-1/2;
- y = u.f;
+ /* |x| */
+ u.i &= (uint64_t)-1 / 2;
+ y = u.f;
- if (e < 0x3ff - 1) {
- if (e < 0x3ff - 32) {
- /* handle underflow */
- if (e == 0)
- FORCE_EVAL((float)y);
- } else {
- /* |x| < 0.5, up to 1.7ulp error */
- y = 0.5*log1p(2*y + 2*y*y/(1-y));
- }
- } else {
- /* avoid overflow */
- y = 0.5*log1p(2*(y/(1-y)));
- }
- return s ? -y : y;
+ if (e < 0x3ff - 1) {
+ if (e < 0x3ff - 32) {
+ /* handle underflow */
+ if (e == 0)
+ FORCE_EVAL((float)y);
+ } else {
+ /* |x| < 0.5, up to 1.7ulp error */
+ y = 0.5 * log1p(2 * y + 2 * y * y / (1 - y));
+ }
+ } else {
+ /* avoid overflow */
+ y = 0.5 * log1p(2 * (y / (1 - y)));
+ }
+ return s ? -y : y;
}

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