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authorThomas Fitzsimmons <fitzsim@redhat.com>2002-06-07 21:59:57 +0000
committerThomas Fitzsimmons <fitzsim@redhat.com>2002-06-07 21:59:57 +0000
commit0953fe640f177b565578ed7ecc77169ec1a914fa (patch)
treef63c2a55e4d0e5a067da91cea95ae88a7c15af7e /newlib/libm/math/w_exp2.c
parent2bd6505b3991588a15c865618e1edb76d4a6373c (diff)
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* 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/math/w_exp2.c')
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diff --git a/newlib/libm/math/w_exp2.c b/newlib/libm/math/w_exp2.c
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+
+/* @(#)w_exp2.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
+ <<exp2>>, <<exp2f>>---exponential
+INDEX
+ exp2
+INDEX
+ exp2f
+
+ANSI_SYNOPSIS
+ #include <math.h>
+ double exp2(double <[x]>);
+ float exp2f(float <[x]>);
+
+TRAD_SYNOPSIS
+ #include <math.h>
+ double exp2(<[x]>);
+ double <[x]>;
+
+ float exp2f(<[x]>);
+ float <[x]>;
+
+DESCRIPTION
+ <<exp2>> and <<exp2f>> calculate 2 ^ <[x]>, that is,
+ @ifinfo
+ 2 raised to the power <[x]>.
+
+ You can use the (non-ANSI) function <<matherr>> to specify
+ error handling for these functions.
+
+RETURNS
+ On success, <<exp2>> and <<exp2f>> return the calculated value.
+ If the result underflows, the returned value is <<0>>. If the
+ result overflows, the returned value is <<HUGE_VAL>>. In
+ either case, <<errno>> is set to <<ERANGE>>.
+
+*/
+
+/*
+ * wrapper exp2(x)
+ */
+
+#include "fdlibm.h"
+#include <errno.h>
+#include <math.h>
+
+#ifndef _DOUBLE_IS_32BITS
+
+#ifdef __STDC__
+ double exp2(double x) /* wrapper exp2 */
+#else
+ double exp2(x) /* wrapper exp2 */
+ double x;
+#endif
+{
+ return pow(2.0, x);
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */