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| author | bde <bde@FreeBSD.org> | 2008-02-09 10:36:07 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 2008-02-09 10:36:07 +0000 |
| commit | d28692763b00bd949c4f739aaa21219790a74fec (patch) | |
| tree | 82592ea653787970f96da03a927aacfab2a08ed1 /lib/msun/src | |
| parent | e16828cb77bde0ce723cabbe41e90f81f2522749 (diff) | |
| download | FreeBSD-src-d28692763b00bd949c4f739aaa21219790a74fec.zip FreeBSD-src-d28692763b00bd949c4f739aaa21219790a74fec.tar.gz | |
Fix a comment about coefficients and expand a related one.
Diffstat (limited to 'lib/msun/src')
| -rw-r--r-- | lib/msun/src/s_expm1.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/msun/src/s_expm1.c b/lib/msun/src/s_expm1.c index 03d25b1..4da712d 100644 --- a/lib/msun/src/s_expm1.c +++ b/lib/msun/src/s_expm1.c @@ -45,7 +45,7 @@ __FBSDID("$FreeBSD$"); * Q3 = -9.9206344733435987357E-6, * Q4 = 2.5051361420808517002E-7, * Q5 = -6.2843505682382617102E-9; - * (where z=r*r, and the values of Q1 to Q5 are listed below) + * z = r*r, * with error bounded by * | 5 | -61 * | 1.0+Q1*z+...+Q5*z - R1(z) | <= 2 @@ -119,7 +119,7 @@ o_threshold = 7.09782712893383973096e+02,/* 0x40862E42, 0xFEFA39EF */ ln2_hi = 6.93147180369123816490e-01,/* 0x3fe62e42, 0xfee00000 */ ln2_lo = 1.90821492927058770002e-10,/* 0x3dea39ef, 0x35793c76 */ invln2 = 1.44269504088896338700e+00,/* 0x3ff71547, 0x652b82fe */ - /* scaled coefficients related to expm1 */ +/* Scaled Q's: Qn_here = 2**n * Qn_above, for R(2*z) where z = hxs = x*x/2: */ Q1 = -3.33333333333331316428e-02, /* BFA11111 111110F4 */ Q2 = 1.58730158725481460165e-03, /* 3F5A01A0 19FE5585 */ Q3 = -7.93650757867487942473e-05, /* BF14CE19 9EAADBB7 */ |
