diff options
Diffstat (limited to 'newlib/libm/mathfp/sf_sineh.c')
-rw-r--r-- | newlib/libm/mathfp/sf_sineh.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/newlib/libm/mathfp/sf_sineh.c b/newlib/libm/mathfp/sf_sineh.c deleted file mode 100644 index 4eee2c9..0000000 --- a/newlib/libm/mathfp/sf_sineh.c +++ /dev/null @@ -1,110 +0,0 @@ - -/* @(#)z_sinehf.c 1.0 98/08/13 */ -/****************************************************************** - * The following routines are coded directly from the algorithms - * and coefficients given in "Software Manual for the Elementary - * Functions" by William J. Cody, Jr. and William Waite, Prentice - * Hall, 1980. - ******************************************************************/ -/****************************************************************** - * Hyperbolic Sine - * - * Input: - * x - floating point value - * - * Output: - * hyperbolic sine of x - * - * Description: - * This routine calculates hyperbolic sines. - * - *****************************************************************/ - -#include <float.h> -#include "fdlibm.h" -#include "zmath.h" - -static const float q[] = { -0.428277109e+2 }; -static const float p[] = { -0.713793159e+1, - -0.190333399 }; -static const float LNV = 0.6931610107; -static const float INV_V2 = 0.2499930850; -static const float V_OVER2_MINUS1 = 0.1383027787e-4; - -float -_DEFUN (sinehf, (float, int), - float x _AND - int cosineh) -{ - float y, f, P, Q, R, res, z, w; - int sgn = 1; - float WBAR = 18.55; - - /* Check for special values. */ - switch (numtestf (x)) - { - case NAN: - errno = EDOM; - return (x); - case INF: - errno = ERANGE; - return (ispos (x) ? z_infinity_f.f : -z_infinity_f.f); - } - - y = fabs (x); - - if (!cosineh && x < 0.0) - sgn = -1; - - if ((y > 1.0 && !cosineh) || cosineh) - { - if (y > BIGX) - { - w = y - LNV; - - /* Check for w > maximum here. */ - if (w > BIGX) - { - errno = ERANGE; - return (x); - } - - z = exp (w); - - if (w > WBAR) - res = z * (V_OVER2_MINUS1 + 1.0); - } - - else - { - z = exp (y); - if (cosineh) - res = (z + 1 / z) / 2.0; - else - res = (z - 1 / z) / 2.0; - } - - if (sgn < 0) - res = -res; - } - else - { - /* Check for y being too small. */ - if (y < z_rooteps_f) - { - res = x; - } - /* Calculate the Taylor series. */ - else - { - f = x * x; - Q = f + q[0]; - P = p[1] * f + p[0]; - R = f * (P / Q); - - res = x + x * R; - } - } - - return (res); -} |