From ead1ef37d2c3cd998dffb803c43a4fc2d08537ff Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Thu, 6 Oct 2016 12:54:04 +0530 Subject: Make quadrant shift a boolean in reduce_and_compute in s_sin.c Like the previous change, make the quadrant shift a boolean to make it clearer that we will do at most a single rotation of the quadrants to compute the cosine from the sine function. This does not affect codegen. --- sysdeps/ieee754/dbl-64/s_sin.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'sysdeps') diff --git a/sysdeps/ieee754/dbl-64/s_sin.c b/sysdeps/ieee754/dbl-64/s_sin.c index 67bdebfd6c..26b984d207 100644 --- a/sysdeps/ieee754/dbl-64/s_sin.c +++ b/sysdeps/ieee754/dbl-64/s_sin.c @@ -268,11 +268,11 @@ do_sin_slow (double x, double dx, double eps, double *corp) by simply rotating the quadrants by 1. */ static inline double __always_inline -reduce_and_compute (double x, unsigned int k) +reduce_and_compute (double x, bool shift_quadrant) { double retval = 0, a, da; unsigned int n = __branred (x, &a, &da); - k = (n + k) % 4; + int4 k = (n + shift_quadrant) % 4; switch (k) { case 2: @@ -512,7 +512,7 @@ __sin (double x) /* -----------------281474976710656 <|x| <2^1024----------------------------*/ else if (k < 0x7ff00000) - retval = reduce_and_compute (x, 0); + retval = reduce_and_compute (x, false); /*--------------------- |x| > 2^1024 ----------------------------------*/ else @@ -605,7 +605,7 @@ __cos (double x) /* 281474976710656 <|x| <2^1024 */ else if (k < 0x7ff00000) - retval = reduce_and_compute (x, 1); + retval = reduce_and_compute (x, true); else { -- cgit v1.2.3