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math.h: make __FLOAT_BITS and __DOUBLE_BITS C89
[musl]
/
src
/
math
/
log1pl.c
diff --git
a/src/math/log1pl.c
b/src/math/log1pl.c
index
7aafc5c
..
37da46d
100644
(file)
--- a/
src/math/log1pl.c
+++ b/
src/math/log1pl.c
@@
-46,11
+46,6
@@
* Relative error:
* arithmetic domain # trials peak rms
* IEEE -1.0, 9.0 100000 8.2e-20 2.5e-20
* Relative error:
* arithmetic domain # trials peak rms
* IEEE -1.0, 9.0 100000 8.2e-20 2.5e-20
- *
- * ERROR MESSAGES:
- *
- * log singularity: x-1 = 0; returns -INFINITY
- * log domain: x-1 < 0; returns NAN
*/
#include "libm.h"
*/
#include "libm.h"
@@
-65,7
+60,7
@@
long double log1pl(long double x)
* 1/sqrt(2) <= x < sqrt(2)
* Theoretical peak relative error = 2.32e-20
*/
* 1/sqrt(2) <= x < sqrt(2)
* Theoretical peak relative error = 2.32e-20
*/
-static long double P[] = {
+static
const
long double P[] = {
4.5270000862445199635215E-5L,
4.9854102823193375972212E-1L,
6.5787325942061044846969E0L,
4.5270000862445199635215E-5L,
4.9854102823193375972212E-1L,
6.5787325942061044846969E0L,
@@
-74,7
+69,7
@@
static long double P[] = {
5.7112963590585538103336E1L,
2.0039553499201281259648E1L,
};
5.7112963590585538103336E1L,
2.0039553499201281259648E1L,
};
-static long double Q[] = {
+static
const
long double Q[] = {
/* 1.0000000000000000000000E0,*/
1.5062909083469192043167E1L,
8.3047565967967209469434E1L,
/* 1.0000000000000000000000E0,*/
1.5062909083469192043167E1L,
8.3047565967967209469434E1L,
@@
-89,13
+84,13
@@
static long double Q[] = {
* 1/sqrt(2) <= x < sqrt(2)
* Theoretical peak relative error = 6.16e-22
*/
* 1/sqrt(2) <= x < sqrt(2)
* Theoretical peak relative error = 6.16e-22
*/
-static long double R[4] = {
+static
const
long double R[4] = {
1.9757429581415468984296E-3L,
-7.1990767473014147232598E-1L,
1.0777257190312272158094E1L,
-3.5717684488096787370998E1L,
};
1.9757429581415468984296E-3L,
-7.1990767473014147232598E-1L,
1.0777257190312272158094E1L,
-3.5717684488096787370998E1L,
};
-static long double S[4] = {
+static
const
long double S[4] = {
/* 1.00000000000000000000E0L,*/
-2.6201045551331104417768E1L,
1.9361891836232102174846E2L,
/* 1.00000000000000000000E0L,*/
-2.6201045551331104417768E1L,
1.9361891836232102174846E2L,
@@
-118,13
+113,13
@@
long double log1pl(long double xm1)
if (xm1 == 0.0)
return xm1;
if (xm1 == 0.0)
return xm1;
- x = xm1 + 1.0
L
;
+ x = xm1 + 1.0;
/* Test for domain errors. */
/* Test for domain errors. */
- if (x <= 0.0
L
) {
- if (x == 0.0
L
)
- return -
INFINITY;
- return
NAN;
+ if (x <= 0.0) {
+ if (x == 0.0)
+ return -
1/(x*x); /* -inf with divbyzero */
+ return
0/0.0f; /* nan with invalid */
}
/* Separate mantissa from exponent.
}
/* Separate mantissa from exponent.
@@
-136,12
+131,12
@@
long double log1pl(long double xm1)
if (e > 2 || e < -2) {
if (x < SQRTH) { /* 2(2x-1)/(2x+1) */
e -= 1;
if (e > 2 || e < -2) {
if (x < SQRTH) { /* 2(2x-1)/(2x+1) */
e -= 1;
- z = x - 0.5
L
;
- y = 0.5
L * z + 0.5L
;
+ z = x - 0.5;
+ y = 0.5
* z + 0.5
;
} else { /* 2 (x-1)/(x+1) */
} else { /* 2 (x-1)/(x+1) */
- z = x - 0.5
L
;
- z -= 0.5
L
;
- y = 0.5
L * x + 0.5L
;
+ z = x - 0.5;
+ z -= 0.5;
+ y = 0.5
* x + 0.5
;
}
x = z / y;
z = x*x;
}
x = z / y;
z = x*x;
@@
-156,12
+151,12
@@
long double log1pl(long double xm1)
if (x < SQRTH) {
e -= 1;
if (e != 0)
if (x < SQRTH) {
e -= 1;
if (e != 0)
- x = 2.0 * x - 1.0
L
;
+ x = 2.0 * x - 1.0;
else
x = xm1;
} else {
if (e != 0)
else
x = xm1;
} else {
if (e != 0)
- x = x - 1.0
L
;
+ x = x - 1.0;
else
x = xm1;
}
else
x = xm1;
}