Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 1 | /* Complex math module */ |
| 2 | |
| 3 | /* much code borrowed from mathmodule.c */ |
| 4 | |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 5 | #include "Python.h" |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 6 | |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 7 | #ifdef i860 |
| 8 | /* Cray APP has bogus definition of HUGE_VAL in <math.h> */ |
| 9 | #undef HUGE_VAL |
| 10 | #endif |
| 11 | |
| 12 | #ifdef HUGE_VAL |
| 13 | #define CHECK(x) if (errno != 0) ; \ |
| 14 | else if (-HUGE_VAL <= (x) && (x) <= HUGE_VAL) ; \ |
| 15 | else errno = ERANGE |
| 16 | #else |
| 17 | #define CHECK(x) /* Don't know how to check */ |
| 18 | #endif |
| 19 | |
| 20 | #ifndef M_PI |
| 21 | #define M_PI (3.141592653589793239) |
| 22 | #endif |
| 23 | |
| 24 | /* First, the C functions that do the real work */ |
| 25 | |
| 26 | /* constants */ |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 27 | static Py_complex c_1 = {1., 0.}; |
| 28 | static Py_complex c_half = {0.5, 0.}; |
| 29 | static Py_complex c_i = {0., 1.}; |
| 30 | static Py_complex c_i2 = {0., 0.5}; |
Guido van Rossum | a376cc5 | 1996-12-05 23:43:35 +0000 | [diff] [blame] | 31 | #if 0 |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 32 | static Py_complex c_mi = {0., -1.}; |
| 33 | static Py_complex c_pi2 = {M_PI/2., 0.}; |
Guido van Rossum | a376cc5 | 1996-12-05 23:43:35 +0000 | [diff] [blame] | 34 | #endif |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 35 | |
| 36 | /* forward declarations */ |
Thomas Wouters | eb61b6e | 2000-07-24 11:17:40 +0000 | [diff] [blame] | 37 | staticforward Py_complex c_log(Py_complex); |
| 38 | staticforward Py_complex c_prodi(Py_complex); |
| 39 | staticforward Py_complex c_sqrt(Py_complex); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 40 | |
| 41 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 42 | static Py_complex c_acos(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 43 | { |
| 44 | return c_neg(c_prodi(c_log(c_sum(x,c_prod(c_i, |
| 45 | c_sqrt(c_diff(c_1,c_prod(x,x)))))))); |
| 46 | } |
| 47 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 48 | static char c_acos_doc [] = |
| 49 | "acos(x)\n\ |
| 50 | \n\ |
| 51 | Return the arc cosine of x."; |
| 52 | |
| 53 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 54 | static Py_complex c_acosh(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 55 | { |
Guido van Rossum | f385c5e | 2000-06-30 02:29:22 +0000 | [diff] [blame] | 56 | Py_complex z; |
| 57 | z = c_sqrt(c_half); |
| 58 | z = c_log(c_prod(z, c_sum(c_sqrt(c_sum(x,c_1)), |
| 59 | c_sqrt(c_diff(x,c_1))))); |
| 60 | return c_sum(z, z); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 61 | } |
| 62 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 63 | static char c_acosh_doc [] = |
| 64 | "acosh(x)\n\ |
| 65 | \n\ |
Fred Drake | 0e11c49 | 1999-03-16 14:17:48 +0000 | [diff] [blame] | 66 | Return the hyperbolic arccosine of x."; |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 67 | |
| 68 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 69 | static Py_complex c_asin(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 70 | { |
Guido van Rossum | f385c5e | 2000-06-30 02:29:22 +0000 | [diff] [blame] | 71 | Py_complex z; |
| 72 | z = c_sqrt(c_half); |
| 73 | z = c_log(c_prod(z, c_sum(c_sqrt(c_sum(x,c_i)), |
| 74 | c_sqrt(c_diff(x,c_i))))); |
| 75 | return c_sum(z, z); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 76 | } |
| 77 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 78 | static char c_asin_doc [] = |
| 79 | "asin(x)\n\ |
| 80 | \n\ |
| 81 | Return the arc sine of x."; |
| 82 | |
| 83 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 84 | static Py_complex c_asinh(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 85 | { |
Guido van Rossum | 11a5071 | 1999-01-14 19:11:11 +0000 | [diff] [blame] | 86 | /* Break up long expression for WATCOM */ |
| 87 | Py_complex z; |
Guido van Rossum | f385c5e | 2000-06-30 02:29:22 +0000 | [diff] [blame] | 88 | z = c_sum(c_1,c_prod(x, x)); |
| 89 | return c_log(c_sum(c_sqrt(z), x)); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 90 | } |
| 91 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 92 | static char c_asinh_doc [] = |
| 93 | "asinh(x)\n\ |
| 94 | \n\ |
| 95 | Return the hyperbolic arc sine of x."; |
| 96 | |
| 97 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 98 | static Py_complex c_atan(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 99 | { |
| 100 | return c_prod(c_i2,c_log(c_quot(c_sum(c_i,x),c_diff(c_i,x)))); |
| 101 | } |
| 102 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 103 | static char c_atan_doc [] = |
| 104 | "atan(x)\n\ |
| 105 | \n\ |
| 106 | Return the arc tangent of x."; |
| 107 | |
| 108 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 109 | static Py_complex c_atanh(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 110 | { |
| 111 | return c_prod(c_half,c_log(c_quot(c_sum(c_1,x),c_diff(c_1,x)))); |
| 112 | } |
| 113 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 114 | static char c_atanh_doc [] = |
| 115 | "atanh(x)\n\ |
| 116 | \n\ |
| 117 | Return the hyperbolic arc tangent of x."; |
| 118 | |
| 119 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 120 | static Py_complex c_cos(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 121 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 122 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 123 | r.real = cos(x.real)*cosh(x.imag); |
| 124 | r.imag = -sin(x.real)*sinh(x.imag); |
| 125 | return r; |
| 126 | } |
| 127 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 128 | static char c_cos_doc [] = |
| 129 | "cos(x)\n\ |
| 130 | \n\ |
| 131 | Return the cosine of x."; |
| 132 | |
| 133 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 134 | static Py_complex c_cosh(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 135 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 136 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 137 | r.real = cos(x.imag)*cosh(x.real); |
| 138 | r.imag = sin(x.imag)*sinh(x.real); |
| 139 | return r; |
| 140 | } |
| 141 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 142 | static char c_cosh_doc [] = |
| 143 | "cosh(x)\n\ |
| 144 | \n\ |
| 145 | Return the hyperbolic cosine of x."; |
| 146 | |
| 147 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 148 | static Py_complex c_exp(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 149 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 150 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 151 | double l = exp(x.real); |
| 152 | r.real = l*cos(x.imag); |
| 153 | r.imag = l*sin(x.imag); |
| 154 | return r; |
| 155 | } |
| 156 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 157 | static char c_exp_doc [] = |
| 158 | "exp(x)\n\ |
| 159 | \n\ |
| 160 | Return the exponential value e**x."; |
| 161 | |
| 162 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 163 | static Py_complex c_log(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 164 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 165 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 166 | double l = hypot(x.real,x.imag); |
| 167 | r.imag = atan2(x.imag, x.real); |
| 168 | r.real = log(l); |
| 169 | return r; |
| 170 | } |
| 171 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 172 | static char c_log_doc [] = |
| 173 | "log(x)\n\ |
| 174 | \n\ |
| 175 | Return the natural logarithm of x."; |
| 176 | |
| 177 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 178 | static Py_complex c_log10(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 179 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 180 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 181 | double l = hypot(x.real,x.imag); |
| 182 | r.imag = atan2(x.imag, x.real)/log(10.); |
| 183 | r.real = log10(l); |
| 184 | return r; |
| 185 | } |
| 186 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 187 | static char c_log10_doc [] = |
| 188 | "log10(x)\n\ |
| 189 | \n\ |
| 190 | Return the base-10 logarithm of x."; |
| 191 | |
| 192 | |
| 193 | /* internal function not available from Python */ |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 194 | static Py_complex c_prodi(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 195 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 196 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 197 | r.real = -x.imag; |
| 198 | r.imag = x.real; |
| 199 | return r; |
| 200 | } |
| 201 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 202 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 203 | static Py_complex c_sin(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 204 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 205 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 206 | r.real = sin(x.real)*cosh(x.imag); |
| 207 | r.imag = cos(x.real)*sinh(x.imag); |
| 208 | return r; |
| 209 | } |
| 210 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 211 | static char c_sin_doc [] = |
| 212 | "sin(x)\n\ |
| 213 | \n\ |
| 214 | Return the sine of x."; |
| 215 | |
| 216 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 217 | static Py_complex c_sinh(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 218 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 219 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 220 | r.real = cos(x.imag)*sinh(x.real); |
| 221 | r.imag = sin(x.imag)*cosh(x.real); |
| 222 | return r; |
| 223 | } |
| 224 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 225 | static char c_sinh_doc [] = |
| 226 | "sinh(x)\n\ |
| 227 | \n\ |
| 228 | Return the hyperbolic sine of x."; |
| 229 | |
| 230 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 231 | static Py_complex c_sqrt(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 232 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 233 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 234 | double s,d; |
| 235 | if (x.real == 0. && x.imag == 0.) |
| 236 | r = x; |
| 237 | else { |
| 238 | s = sqrt(0.5*(fabs(x.real) + hypot(x.real,x.imag))); |
| 239 | d = 0.5*x.imag/s; |
| 240 | if (x.real > 0.) { |
| 241 | r.real = s; |
| 242 | r.imag = d; |
| 243 | } |
| 244 | else if (x.imag >= 0.) { |
| 245 | r.real = d; |
| 246 | r.imag = s; |
| 247 | } |
| 248 | else { |
| 249 | r.real = -d; |
| 250 | r.imag = -s; |
| 251 | } |
| 252 | } |
| 253 | return r; |
| 254 | } |
| 255 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 256 | static char c_sqrt_doc [] = |
| 257 | "sqrt(x)\n\ |
| 258 | \n\ |
| 259 | Return the square root of x."; |
| 260 | |
| 261 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 262 | static Py_complex c_tan(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 263 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 264 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 265 | double sr,cr,shi,chi; |
| 266 | double rs,is,rc,ic; |
| 267 | double d; |
| 268 | sr = sin(x.real); |
| 269 | cr = cos(x.real); |
| 270 | shi = sinh(x.imag); |
| 271 | chi = cosh(x.imag); |
| 272 | rs = sr*chi; |
| 273 | is = cr*shi; |
| 274 | rc = cr*chi; |
| 275 | ic = -sr*shi; |
| 276 | d = rc*rc + ic*ic; |
| 277 | r.real = (rs*rc+is*ic)/d; |
| 278 | r.imag = (is*rc-rs*ic)/d; |
| 279 | return r; |
| 280 | } |
| 281 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 282 | static char c_tan_doc [] = |
| 283 | "tan(x)\n\ |
| 284 | \n\ |
| 285 | Return the tangent of x."; |
| 286 | |
| 287 | |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 288 | static Py_complex c_tanh(Py_complex x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 289 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 290 | Py_complex r; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 291 | double si,ci,shr,chr; |
| 292 | double rs,is,rc,ic; |
| 293 | double d; |
| 294 | si = sin(x.imag); |
| 295 | ci = cos(x.imag); |
| 296 | shr = sinh(x.real); |
| 297 | chr = cosh(x.real); |
| 298 | rs = ci*shr; |
| 299 | is = si*chr; |
| 300 | rc = ci*chr; |
| 301 | ic = si*shr; |
| 302 | d = rc*rc + ic*ic; |
| 303 | r.real = (rs*rc+is*ic)/d; |
| 304 | r.imag = (is*rc-rs*ic)/d; |
| 305 | return r; |
| 306 | } |
| 307 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 308 | static char c_tanh_doc [] = |
| 309 | "tanh(x)\n\ |
| 310 | \n\ |
| 311 | Return the hyperbolic tangent of x."; |
| 312 | |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 313 | |
| 314 | /* And now the glue to make them available from Python: */ |
| 315 | |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 316 | static PyObject * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 317 | math_error(void) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 318 | { |
| 319 | if (errno == EDOM) |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 320 | PyErr_SetString(PyExc_ValueError, "math domain error"); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 321 | else if (errno == ERANGE) |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 322 | PyErr_SetString(PyExc_OverflowError, "math range error"); |
| 323 | else /* Unexpected math error */ |
| 324 | PyErr_SetFromErrno(PyExc_ValueError); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 325 | return NULL; |
| 326 | } |
| 327 | |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 328 | static PyObject * |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 329 | math_1(PyObject *args, Py_complex (*func)(Py_complex)) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 330 | { |
Guido van Rossum | 9e720e3 | 1996-07-21 02:31:35 +0000 | [diff] [blame] | 331 | Py_complex x; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 332 | if (!PyArg_ParseTuple(args, "D", &x)) |
| 333 | return NULL; |
| 334 | errno = 0; |
Guido van Rossum | 52fa3a6 | 1997-02-14 22:59:58 +0000 | [diff] [blame] | 335 | PyFPE_START_PROTECT("complex function", return 0) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 336 | x = (*func)(x); |
Guido van Rossum | 45b8391 | 1997-03-14 04:32:50 +0000 | [diff] [blame] | 337 | PyFPE_END_PROTECT(x) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 338 | CHECK(x.real); |
| 339 | CHECK(x.imag); |
| 340 | if (errno != 0) |
| 341 | return math_error(); |
| 342 | else |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 343 | return PyComplex_FromCComplex(x); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | #define FUNC1(stubname, func) \ |
Peter Schneider-Kamp | f1ca898 | 2000-07-10 09:31:34 +0000 | [diff] [blame] | 347 | static PyObject * stubname(PyObject *self, PyObject *args) { \ |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 348 | return math_1(args, func); \ |
| 349 | } |
| 350 | |
| 351 | FUNC1(cmath_acos, c_acos) |
| 352 | FUNC1(cmath_acosh, c_acosh) |
| 353 | FUNC1(cmath_asin, c_asin) |
| 354 | FUNC1(cmath_asinh, c_asinh) |
| 355 | FUNC1(cmath_atan, c_atan) |
| 356 | FUNC1(cmath_atanh, c_atanh) |
| 357 | FUNC1(cmath_cos, c_cos) |
| 358 | FUNC1(cmath_cosh, c_cosh) |
| 359 | FUNC1(cmath_exp, c_exp) |
| 360 | FUNC1(cmath_log, c_log) |
| 361 | FUNC1(cmath_log10, c_log10) |
| 362 | FUNC1(cmath_sin, c_sin) |
| 363 | FUNC1(cmath_sinh, c_sinh) |
| 364 | FUNC1(cmath_sqrt, c_sqrt) |
| 365 | FUNC1(cmath_tan, c_tan) |
| 366 | FUNC1(cmath_tanh, c_tanh) |
| 367 | |
| 368 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 369 | static char module_doc [] = |
| 370 | "This module is always available. It provides access to mathematical\n\ |
| 371 | functions for complex numbers."; |
| 372 | |
| 373 | |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 374 | static PyMethodDef cmath_methods[] = { |
Andrew M. Kuchling | e365fb8 | 2000-08-03 02:06:16 +0000 | [diff] [blame] | 375 | {"acos", cmath_acos, |
| 376 | METH_VARARGS, c_acos_doc}, |
| 377 | {"acosh", cmath_acosh, |
| 378 | METH_VARARGS, c_acosh_doc}, |
| 379 | {"asin", cmath_asin, |
| 380 | METH_VARARGS, c_asin_doc}, |
| 381 | {"asinh", cmath_asinh, |
| 382 | METH_VARARGS, c_asinh_doc}, |
| 383 | {"atan", cmath_atan, |
| 384 | METH_VARARGS, c_atan_doc}, |
| 385 | {"atanh", cmath_atanh, |
| 386 | METH_VARARGS, c_atanh_doc}, |
| 387 | {"cos", cmath_cos, |
| 388 | METH_VARARGS, c_cos_doc}, |
| 389 | {"cosh", cmath_cosh, |
| 390 | METH_VARARGS, c_cosh_doc}, |
| 391 | {"exp", cmath_exp, |
| 392 | METH_VARARGS, c_exp_doc}, |
| 393 | {"log", cmath_log, |
| 394 | METH_VARARGS, c_log_doc}, |
| 395 | {"log10", cmath_log10, |
| 396 | METH_VARARGS, c_log10_doc}, |
| 397 | {"sin", cmath_sin, |
| 398 | METH_VARARGS, c_sin_doc}, |
| 399 | {"sinh", cmath_sinh, |
| 400 | METH_VARARGS, c_sinh_doc}, |
| 401 | {"sqrt", cmath_sqrt, |
| 402 | METH_VARARGS, c_sqrt_doc}, |
| 403 | {"tan", cmath_tan, |
| 404 | METH_VARARGS, c_tan_doc}, |
| 405 | {"tanh", cmath_tanh, |
| 406 | METH_VARARGS, c_tanh_doc}, |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 407 | {NULL, NULL} /* sentinel */ |
| 408 | }; |
| 409 | |
Guido van Rossum | 3886bb6 | 1998-12-04 18:50:17 +0000 | [diff] [blame] | 410 | DL_EXPORT(void) |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 411 | initcmath(void) |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 412 | { |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 413 | PyObject *m, *d, *v; |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 414 | |
Guido van Rossum | c6e2290 | 1998-12-04 19:26:43 +0000 | [diff] [blame] | 415 | m = Py_InitModule3("cmath", cmath_methods, module_doc); |
Roger E. Masse | 24070ca | 1996-12-09 22:59:53 +0000 | [diff] [blame] | 416 | d = PyModule_GetDict(m); |
| 417 | PyDict_SetItemString(d, "pi", |
| 418 | v = PyFloat_FromDouble(atan(1.0) * 4.0)); |
| 419 | Py_DECREF(v); |
| 420 | PyDict_SetItemString(d, "e", v = PyFloat_FromDouble(exp(1.0))); |
| 421 | Py_DECREF(v); |
Guido van Rossum | 71aa32f | 1996-01-12 01:34:57 +0000 | [diff] [blame] | 422 | } |