diff options
Diffstat (limited to 'newlib/libm/common/sf_fpclassify.c')
-rw-r--r-- | newlib/libm/common/sf_fpclassify.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/newlib/libm/common/sf_fpclassify.c b/newlib/libm/common/sf_fpclassify.c new file mode 100644 index 000000000..878457f39 --- /dev/null +++ b/newlib/libm/common/sf_fpclassify.c @@ -0,0 +1,29 @@ +/* Copyright (C) 2002,2007 by Red Hat, Incorporated. All rights reserved. + * + * Permission to use, copy, modify, and distribute this software + * is freely granted, provided that this notice is preserved. + */ + +#include "fdlibm.h" + +int +__fpclassifyf (float x) +{ + __uint32_t w; + + GET_FLOAT_WORD(w,x); + + if (w == 0x00000000 || w == 0x80000000) + return FP_ZERO; + else if ((w >= 0x00800000 && w <= 0x7f7fffff) || + (w >= 0x80800000 && w <= 0xff7fffff)) + return FP_NORMAL; + else if ((w >= 0x00000001 && w <= 0x007fffff) || + (w >= 0x80000001 && w <= 0x807fffff)) + return FP_SUBNORMAL; + else if (w == 0x7f800000 || w == 0xff800000) + return FP_INFINITE; + else + return FP_NAN; +} + |