diff options
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_sin.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_sin.c b/sysdeps/ieee754/dbl-64/s_sin.c index 7d89e3dfc2..a412c3642d 100644 --- a/sysdeps/ieee754/dbl-64/s_sin.c +++ b/sysdeps/ieee754/dbl-64/s_sin.c @@ -51,16 +51,16 @@ #define POLYNOMIAL(xx) (POLYNOMIAL2 (xx) + s1) /* The computed polynomial is a variation of the Taylor series expansion for - sin(a): + sin(x): - a - a^3/3! + a^5/5! - a^7/7! + a^9/9! + (1 - a^2) * da / 2 + x - x^3/3! + x^5/5! - x^7/7! + x^9/9! - dx*x^2/2 + dx The constants s1, s2, s3, etc. are pre-computed values of 1/3!, 1/5! and so on. The result is returned to LHS. */ -#define TAYLOR_SIN(xx, a, da) \ +#define TAYLOR_SIN(xx, x, dx) \ ({ \ - double t = ((POLYNOMIAL (xx) * (a) - 0.5 * (da)) * (xx) + (da)); \ - double res = (a) + t; \ + double t = ((POLYNOMIAL (xx) * (x) - 0.5 * (dx)) * (xx) + (dx)); \ + double res = (x) + t; \ res; \ }) |