From 1cade5a375642ee19d536e4c5d23ae0238836134 Mon Sep 17 00:00:00 2001 From: drepper Date: Mon, 31 Mar 1997 22:36:34 +0000 Subject: [PATCH] Update status of math functions. --- PROJECTS | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/PROJECTS b/PROJECTS index 394b18efdf..6b381f7ceb 100644 --- a/PROJECTS +++ b/PROJECTS @@ -58,6 +58,13 @@ contact - exp2 - log2 + - nearbyint + - ceil + - round + - rinttol + - rinttoll + - roundtol + - roundtoll each with float, double, and long double arguments. Writing these functions should be possible when following the implementation of @@ -68,7 +75,6 @@ contact implementation should be possible today. I mention here the names and the way to write them (argument is z = x + iy): - - cexp(z) = e^x (cos y + i sin y) - sin(z) = 1/(2i) (e^(iz) - e^-(iz)) = sin(x) cosh(y) + i cos(x) sinh(y) - cos(z) = 1/2 (e^(iz) + e^-(iz)) = cos(x) cosh(y) - i sin(x) sinh(y) - tan(z) = 1/i (e^(iz) - e^-(iz))/(e^(iz) + e^-(iz)) @@ -77,8 +83,6 @@ contact - acos(z) = -i ln(z + sqrt(z^2-1)) - atan(z) = 1/(2i) ln((1+iz)/(1-iz)) - acot(z) = -1/(2i) ln((iz+1)/(iz-1)) - - sinh(z) = 1/2 (e^z - e^-z) - - cosh(z) = 1/2 (e^z + e^-z) - tanh(z) = (e^z - e^-z)/(e^z + e^-z) - coth(z) = (e^z + e^-z)/(e^z - e^-z) -- 2.11.0