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Diffstat (limited to 'newlib/libm/mathfp/s_isnan.c')
-rw-r--r--newlib/libm/mathfp/s_isnan.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/newlib/libm/mathfp/s_isnan.c b/newlib/libm/mathfp/s_isnan.c
deleted file mode 100644
index 03cfeee59..000000000
--- a/newlib/libm/mathfp/s_isnan.c
+++ /dev/null
@@ -1,125 +0,0 @@
-
-/* @(#)z_isnan.c 1.0 98/08/13 */
-
-/*
-FUNCTION
- <<isnan>>,<<isnanf>>,<<isinf>>,<<isinff>>,<<finite>>,<<finitef>>---test
-for exceptional numbers
-
-INDEX
- isnan
-INDEX
- isinf
-INDEX
- finite
-
-INDEX
- isnanf
-INDEX
- isinff
-INDEX
- finitef
-
-ANSI_SYNOPSIS
- #include <ieeefp.h>
- int isnan(double <[arg]>);
- int isinf(double <[arg]>);
- int finite(double <[arg]>);
- int isnanf(float <[arg]>);
- int isinff(float <[arg]>);
- int finitef(float <[arg]>);
-
-TRAD_SYNOPSIS
- #include <ieeefp.h>
- int isnan(<[arg]>)
- double <[arg]>;
- int isinf(<[arg]>)
- double <[arg]>;
- int finite(<[arg]>);
- double <[arg]>;
- int isnanf(<[arg]>);
- float <[arg]>;
- int isinff(<[arg]>);
- float <[arg]>;
- int finitef(<[arg]>);
- float <[arg]>;
-
-
-DESCRIPTION
- These functions provide information on the floating-point
- argument supplied.
-
- There are five major number formats -
- o+
- o zero
- a number which contains all zero bits.
- o subnormal
- Is used to represent number with a zero exponent, but a nonzero fract
-ion.
- o normal
- A number with an exponent, and a fraction
- o infinity
- A number with an all 1's exponent and a zero fraction.
- o NAN
- A number with an all 1's exponent and a nonzero fraction.
-
- o-
-
- <<isnan>> returns 1 if the argument is a nan. <<isinf>>
- returns 1 if the argument is infinity. <<finite>> returns 1 if the
- argument is zero, subnormal or normal.
-
- The <<isnanf>>, <<isinff>> and <<finitef>> perform the same
- operations as their <<isnan>>, <<isinf>> and <<finite>>
- counterparts, but on single-precision floating-point numbers.
-
-QUICKREF
- isnan - pure
-QUICKREF
- isinf - pure
-QUICKREF
- finite - pure
-QUICKREF
- isnan - pure
-QUICKREF
- isinf - pure
-QUICKREF
- finite - pure
-*/
-
-
-/******************************************************************
- * isnan
- *
- * Input:
- * x - pointer to a floating-point value
- *
- * Output:
- * An integer that indicates if the number is NaN.
- *
- * Description:
- * This routine returns an integer that indicates if the number
- * passed in is NaN (1) or is finite (0).
- *
- *****************************************************************/
-
-#include "fdlibm.h"
-#include "zmath.h"
-
-#ifndef _DOUBLE_IS_32BITS
-
-int isnan (double x)
-{
- __uint32_t lx, hx;
- int exp;
-
- EXTRACT_WORDS (hx, lx, x);
- exp = (hx & 0x7ff00000) >> 20;
-
- if ((exp == 0x7ff) && (hx & 0xf0000 || lx))
- return (1);
- else
- return (0);
-}
-
-#endif /* _DOUBLE_IS_32BITS */