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

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: fusl/src/math/sinl.c
diff --git a/fusl/src/math/sinl.c b/fusl/src/math/sinl.c
new file mode 100644
index 0000000000000000000000000000000000000000..9c0b16eed3492f1e843b9425f11b4ba57c980c7f
--- /dev/null
+++ b/fusl/src/math/sinl.c
@@ -0,0 +1,41 @@
+#include "libm.h"
+
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+long double sinl(long double x)
+{
+ return sin(x);
+}
+#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
+long double sinl(long double x)
+{
+ union ldshape u = {x};
+ unsigned n;
+ long double y[2], hi, lo;
+
+ u.i.se &= 0x7fff;
+ if (u.i.se == 0x7fff)
+ return x - x;
+ if (u.f < M_PI_4) {
+ if (u.i.se < 0x3fff - LDBL_MANT_DIG/2) {
+ /* raise inexact if x!=0 and underflow if subnormal */
+ FORCE_EVAL(u.i.se == 0 ? x*0x1p-120f : x+0x1p120f);
+ return x;
+ }
+ return __sinl(x, 0.0, 0);
+ }
+ n = __rem_pio2l(x, y);
+ hi = y[0];
+ lo = y[1];
+ switch (n & 3) {
+ case 0:
+ return __sinl(hi, lo, 1);
+ case 1:
+ return __cosl(hi, lo);
+ case 2:
+ return -__sinl(hi, lo, 1);
+ case 3:
+ default:
+ return -__cosl(hi, lo);
+ }
+}
+#endif
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