diff options
author | mrb0nk500 <b0nk@b0nk.xyz> | 2023-02-02 17:29:19 -0400 |
---|---|---|
committer | mrb0nk500 <b0nk@b0nk.xyz> | 2023-02-03 13:27:06 -0400 |
commit | f2eabdb6257c09cf2890dac5e9737912728542af (patch) | |
tree | 3b46f6787185d65605651a0f48776dc9779ce648 /src/MSL_C.PPCEABI.bare.H/s_modf.c | |
parent | eef1dd840b7cecac28c2e6b0574707b90a37d4e7 (diff) |
global: Add rest of Dolphin SDK proper, add MSL, and MetroTRK
Finally, it links properly.
Diffstat (limited to 'src/MSL_C.PPCEABI.bare.H/s_modf.c')
-rw-r--r-- | src/MSL_C.PPCEABI.bare.H/s_modf.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/MSL_C.PPCEABI.bare.H/s_modf.c b/src/MSL_C.PPCEABI.bare.H/s_modf.c new file mode 100644 index 0000000..9352e72 --- /dev/null +++ b/src/MSL_C.PPCEABI.bare.H/s_modf.c @@ -0,0 +1,79 @@ +/* @(#)s_modf.c 1.2 95/01/04 */ +/* + * ==================================================== + * 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. + * ==================================================== + */ + +/* + * modf(double x, double *iptr) + * return fraction part of x, and return x's integral part in *iptr. + * Method: + * Bit twiddling. + * + * Exception: + * No exception. + */ + +#include "fdlibm.h" + +#ifdef __STDC__ +static const double one = 1.0; +#else +static double one = 1.0; +#endif + +#ifdef __STDC__ +double modf(double x, double* iptr) +#else +double modf(x, iptr) +double x, *iptr; +#endif +{ + _INT32 i0, i1, j0; + _UINT32 i; + i0 = __HI(x); /* high x */ + i1 = __LO(x); /* low x */ + j0 = ((i0 >> 20) & 0x7ff) - 0x3ff; /* exponent of x */ + if (j0 < 20) { /* integer part in high x */ + if (j0 < 0) { /* |x|<1 */ + __HIp(iptr) = i0 & 0x80000000; + __LOp(iptr) = 0; /* *iptr = +-0 */ + return x; + } else { + i = (0x000fffff) >> j0; + if (((i0 & i) | i1) == 0) { /* x is integral */ + *iptr = x; + __HI(x) &= 0x80000000; + __LO(x) = 0; /* return +-0 */ + return x; + } else { + __HIp(iptr) = i0 & (~i); + __LOp(iptr) = 0; + return x - *iptr; + } + } + } else if (j0 > 51) { /* no fraction part */ + *iptr = x * one; + __HI(x) &= 0x80000000; + __LO(x) = 0; /* return +-0 */ + return x; + } else { /* fraction part in low x */ + i = ((_UINT32)(0xffffffff)) >> (j0 - 20); + if ((i1 & i) == 0) { /* x is integral */ + *iptr = x; + __HI(x) &= 0x80000000; + __LO(x) = 0; /* return +-0 */ + return x; + } else { + __HIp(iptr) = i0; + __LOp(iptr) = i1 & (~i); + return x - *iptr; + } + } +} |