| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Firefox/modules/fdlibm/src/ (Browser von der Mozilla Stiftung Version 136.0.1©) Datei vom 10.2.2025 mit Größe 996 B |
|
Quelle k_logf.h Sprache: C |
|||||||||
|
/*
* ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ //#include <sys/cdefs.h> //__FBSDID("$FreeBSD$"); /* * Float version of k_log.h. See the latter for most comments. */ static const float /* |(log(1+s)-log(1-s))/s - Lg(s)| < 2**-34.24 (~[-4.95e-11, 4.97e-11]). */ Lg1 = 0xaaaaaa.0p-24, /* 0.66666662693 */ Lg2 = 0xccce13.0p-25, /* 0.40000972152 */ Lg3 = 0x91e9ee.0p-25, /* 0.28498786688 */ Lg4 = 0xf89e26.0p-26; /* 0.24279078841 */ static inline float k_log1pf(float f) { float hfsq,s,z,R,w,t1,t2; s = f/((float)2.0+f); z = s*s; w = z*z; t1= w*(Lg2+w*Lg4); t2= z*(Lg1+w*Lg3); R = t2+t1; hfsq=(float)0.5*f*f; return s*(hfsq+R); } ¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
|
2026-03-28