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author | PikalaxALT <pikalaxalt@gmail.com> | 2018-01-03 17:39:24 -0700 |
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committer | PikalaxALT <pikalaxalt@gmail.com> | 2018-01-03 17:39:24 -0700 |
commit | a6c1ed4716cf02626ea035beb6dd4a921642ba80 (patch) | |
tree | ef582c1b52819e27bdd16097ec03b69799d04ede /newlib/libm/math/w_log.c | |
parent | f6c9a624fa8a6878a7fb2b02f55e4990a20feb59 (diff) |
Use libc from agbcc instead of standalone newlib\nYou must have AGBCC commit 80d029caec189587f8b9294b6c8a5a489b8f5f88 in order to compile pmd_red.gbalibc
Diffstat (limited to 'newlib/libm/math/w_log.c')
-rw-r--r-- | newlib/libm/math/w_log.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/newlib/libm/math/w_log.c b/newlib/libm/math/w_log.c deleted file mode 100644 index dcc8b97..0000000 --- a/newlib/libm/math/w_log.c +++ /dev/null @@ -1,115 +0,0 @@ - -/* @(#)w_log.c 5.1 93/09/24 */ -/* - * ==================================================== - * 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. - * ==================================================== - */ - -/* -FUNCTION - <<log>>, <<logf>>---natural logarithms - -INDEX - log -INDEX - logf - -ANSI_SYNOPSIS - #include <math.h> - double log(double <[x]>); - float logf(float <[x]>); - -TRAD_SYNOPSIS - #include <math.h> - double log(<[x]>); - double <[x]>; - - float logf(<[x]>); - float <[x]>; - -DESCRIPTION -Return the natural logarithm of <[x]>, that is, its logarithm base e -(where e is the base of the natural system of logarithms, 2.71828@dots{}). -<<log>> and <<logf>> are identical save for the return and argument types. - -You can use the (non-ANSI) function <<matherr>> to specify error -handling for these functions. - -RETURNS -Normally, returns the calculated value. When <[x]> is zero, the -returned value is <<-HUGE_VAL>> and <<errno>> is set to <<ERANGE>>. -When <[x]> is negative, the returned value is <<-HUGE_VAL>> and -<<errno>> is set to <<EDOM>>. You can control the error behavior via -<<matherr>>. - -PORTABILITY -<<log>> is ANSI, <<logf>> is an extension. -*/ - -/* - * wrapper log(x) - */ - -#include "fdlibm.h" -#include <errno.h> - -#ifndef _DOUBLE_IS_32BITS - -#ifdef __STDC__ - double log(double x) /* wrapper log */ -#else - double log(x) /* wrapper log */ - double x; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_log(x); -#else - double z; - struct exception exc; - z = __ieee754_log(x); - if(_LIB_VERSION == _IEEE_ || isnan(x) || x > 0.0) return z; -#ifndef HUGE_VAL -#define HUGE_VAL inf - double inf = 0.0; - - SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ -#endif - exc.name = "log"; - exc.err = 0; - exc.arg1 = x; - exc.arg2 = x; - if (_LIB_VERSION == _SVID_) - exc.retval = -HUGE; - else - exc.retval = -HUGE_VAL; - if(x==0.0) { - /* log(0) */ - exc.type = SING; - if (_LIB_VERSION == _POSIX_) - errno = ERANGE; - else if (!matherr(&exc)) { - errno = EDOM; - } - } else { - /* log(x<0) */ - exc.type = DOMAIN; - if (_LIB_VERSION == _POSIX_) - errno = EDOM; - else if (!matherr(&exc)) { - errno = EDOM; - } - } - if (exc.err != 0) - errno = exc.err; - return exc.retval; -#endif -} - -#endif /* defined(_DOUBLE_IS_32BITS) */ |