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Diffstat (limited to 'src/math/s_tanf.c')
-rw-r--r-- | src/math/s_tanf.c | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/src/math/s_tanf.c b/src/math/s_tanf.c deleted file mode 100644 index 660dd9c3..00000000 --- a/src/math/s_tanf.c +++ /dev/null @@ -1,40 +0,0 @@ -/* s_tanf.c -- float version of s_tan.c. - * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. - */ - -/* - * ==================================================== - * 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 <math.h> -#include "math_private.h" - -float -tanf(float x) -{ - float y[2],z=0.0; - int32_t n, ix; - - GET_FLOAT_WORD(ix,x); - - /* |x| ~< pi/4 */ - ix &= 0x7fffffff; - if(ix <= 0x3f490fda) return __kernel_tanf(x,z,1); - - /* tan(Inf or NaN) is NaN */ - else if (ix>=0x7f800000) return x-x; /* NaN */ - - /* argument reduction needed */ - else { - n = __ieee754_rem_pio2f(x,y); - return __kernel_tanf(y[0],y[1],1-((n&1)<<1)); /* 1 -- n even - -1 -- n odd */ - } -} |