update TODO

[libm] / TODO

diff --git a/TODO b/TODO
index 1d4405c..f2c0cfc 100644 (file)
--- a/TODO
+++ b/TODO
@@ -8,21 +8,19 @@ lrint:
        see c99 7.12, 7.12.9.5, F.9, F.9.6.5
 small file cleanups:
        if libm.h internals is not needed (ldexp,..) then include math.h only
-       LD64 wrap small long double functions as well
 trigonometric functions:
        __rem_pio_large: is returning 2 bits enough?
        __tan: 3rd arg semantics is probably not optimal
        sinf,cosf: return sindf(-y) vs -sindf(y)?
        __sin,__cos,..: z,w,.. -> x2,x4,.. so degree is easier to see
        __rem_pio2*: rounding trick: simply use the low 32 bits of fn?
+       use long double pi in long double code? (casin, cacos,..)
 nan:
        use strtod? c99 7.12.11.2
 scalbf:
        scalb is buggy, do we need the *f and *l version?
 scalbn:
        needs a rewrite: signed int problems, wrong <-50000 check
-__ldexp_cexp:
-       only complex in math/, move to cmath?
 j0l, y0l,..:
        declare long double bessel functions in math.h?
 uniform inexact exception raising:
@@ -49,6 +47,9 @@ tgamma:
        or bsd tgamma
 complex
        optimizable creal cimag (libm.h macro for internal code?)
+       cpack(x,y) vs x+I*y vs union .a[0]=x, .a[1]=y
+       fix casin[h], cacos[h], catan[h]
+       add missing long double versions
        test? (using mdc lib, available test vectors,..)
        Kahan, W. "Branch Cuts for Complex Elementary Functions, or Much Ado About Nothing's Sign Bit." 1987
        Hull, Fairgrieve, Tang "Implementing complex elementary functions using exception handling" 1994
@@ -59,6 +60,6 @@ asm:
        i386, x86_64 asm versions
 libm test
        test vectors
-       special cases from c99 F.9, G
+       special cases from c99 F.9, G.6
        randomized test using mpfr
 arm fenv?