diff options
| author | Thomas Fitzsimmons <fitzsim@redhat.com> | 2002-06-07 21:59:57 +0000 |
|---|---|---|
| committer | Thomas Fitzsimmons <fitzsim@redhat.com> | 2002-06-07 21:59:57 +0000 |
| commit | 0953fe640f177b565578ed7ecc77169ec1a914fa (patch) | |
| tree | f63c2a55e4d0e5a067da91cea95ae88a7c15af7e /newlib/libm/common/sf_lround.c | |
| parent | 2bd6505b3991588a15c865618e1edb76d4a6373c (diff) | |
| download | cygnal-0953fe640f177b565578ed7ecc77169ec1a914fa.tar.gz cygnal-0953fe640f177b565578ed7ecc77169ec1a914fa.tar.bz2 cygnal-0953fe640f177b565578ed7ecc77169ec1a914fa.zip | |
* libm/common/s_fdim.c: New file.
* libm/common/s_fma.c: Likewise.
* libm/common/s_fmax.c: Likewise.
* libm/common/s_fmin.c: Likewise.
* libm/common/s_fpclassify.c: Likewise.
* libm/common/s_lrint.c: Likewise.
* libm/common/s_lround.c: Likewise.
* libm/common/s_nearbyint.c: Likewise.
* libm/common/s_remquo.c: Likewise.
* libm/common/s_round.c: Likewise.
* libm/common/s_scalbln.c: Likewise.
* libm/common/s_signbit.c: Likewise.
* libm/common/s_trunc.c: Likewise.
* libm/common/sf_fdim.c: Likewise.
* libm/common/sf_fma.c: Likewise.
* libm/common/sf_fmax.c: Likewise.
* libm/common/sf_fmin.c: Likewise.
* libm/common/sf_lrint.c: Likewise.
* libm/common/sf_lround.c: Likewise.
* libm/common/sf_nearbyint.c: Likewise.
* libm/common/sf_remquo.c: Likewise.
* libm/common/sf_round.c: Likewise.
* libm/common/sf_scalbln.c: Likewise.
* libm/common/sf_trunc.c: Likewise.
* libm/math/w_exp2.c: Likewise.
* libm/math/w_tgamma.c: Likewise.
* libm/math/wf_exp2.c: Likewise.
* libm/math/wf_tgamma.c: Likewise.
* libm/mathfp/s_exp2.c: Likewise.
* libm/mathfp/s_tgamma.c: Likewise.
* libm/mathfp/sf_exp2.c: Likewise.
* libm/mathfp/sf_tgamma.c: Likewise.
* libm/math/er_gamma.c: Fix return value.
* libm/math/erf_gamma.c: Likewise.
* libm/mathfp/er_gamma.c: Likewise.
* libm/mathfp/erf_gamma.c: Likewise.
* libc/include/math.h (!__STRICT_ANSI__): Include ISOC99-specific
declarations and macros.
Regenerated all Makefile.in, aclocal.m4 and configure files to
use new libtool macros in top-level libtool.m4
Diffstat (limited to 'newlib/libm/common/sf_lround.c')
| -rw-r--r-- | newlib/libm/common/sf_lround.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/newlib/libm/common/sf_lround.c b/newlib/libm/common/sf_lround.c new file mode 100644 index 000000000..e2e4227e2 --- /dev/null +++ b/newlib/libm/common/sf_lround.c @@ -0,0 +1,62 @@ +/* + * ==================================================== + * 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 "fdlibm.h" + +#ifdef __STDC__ + long int lroundf(float x) +#else + long int lroundf(x) + float x; +#endif +{ + __int32_t exponent_less_127; + __uint32_t w; + long int result; + __int32_t sign; + + GET_FLOAT_WORD (w, x); + exponent_less_127 = ((w & 0x7f800000) >> 23) - 127; + sign = (w & 0x80000000) != 0 ? -1 : 1; + w &= 0x7fffff; + w |= 0x800000; + + if (exponent_less_127 < (8 * sizeof (long int)) - 1) + { + if (exponent_less_127 < 0) + return exponent_less_127 < -1 ? 0 : sign; + else if (exponent_less_127 >= 23) + result = (long int) w << (exponent_less_127 - 23); + else + { + w += 0x400000 >> exponent_less_127; + result = w >> (23 - exponent_less_127); + } + } + else + return (long int) x; + + return sign * result; +} + +#ifdef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + long int round(double x) +#else + long int round(x) + double x; +#endif +{ + return (double) roundf((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ |