Module: CMath
- Defined in:
- mruby/mrbgems/mruby-cmath/src/cmath.c
Class Method Summary collapse
- .acos ⇒ Object
- .acosh ⇒ Object
- .asin ⇒ Object
- .asinh ⇒ Object
- .atan ⇒ Object
- .atanh ⇒ Object
- .cos ⇒ Object
- .cosh ⇒ Object
- .exp ⇒ Object
-
.log ⇒ Object
log(z): return the natural logarithm of z, with branch cut along the negative real axis.
-
.log10 ⇒ Object
log10(z): return the base-10 logarithm of z, with branch cut along the negative real axis.
-
.log2 ⇒ Object
log2(z): return the base-2 logarithm of z, with branch cut along the negative real axis.
- .sin ⇒ Object
- .sinh ⇒ Object
-
.sqrt ⇒ Object
sqrt(z): return square root of z.
- .tan ⇒ Object
- .tanh ⇒ Object
Class Method Details
.acos ⇒ Object
.acosh ⇒ Object
.asin ⇒ Object
.asinh ⇒ Object
.atan ⇒ Object
.atanh ⇒ Object
.cos ⇒ Object
.cosh ⇒ Object
.exp ⇒ Object
.log ⇒ Object
log(z): return the natural logarithm of z, with branch cut along the negative real axis
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# File 'mruby/mrbgems/mruby-cmath/src/cmath.c', line 143
DEF_CMATH_METHOD(exp)
/* log(z): return the natural logarithm of z, with branch cut along the negative real axis */
static mrb_value
cmath_log(mrb_state *mrb, mrb_value self) {
mrb_value z;
mrb_float base;
mrb_float real, imag;
mrb_int n = mrb_get_args(mrb, "o|f", &z, &base);
#ifndef M_E
#define M_E F(exp)(1.0)
#endif
if (n == 1) base = M_E;
if (cmath_get_complex(mrb, z, &real, &imag) || real < 0.0) {
mrb_complex c = CX(real,imag);
c = FC(log)(c);
if (n == 2) c = CXDIVc(c, FC(log)(CX(base,0)));
return mrb_complex_new(mrb, creal(c), cimag(c));
}
if (n == 1) return mrb_float_value(mrb, F(log)(real));
return mrb_float_value(mrb, F(log)(real)/F(log)(base));
}
|
.log10 ⇒ Object
log10(z): return the base-10 logarithm of z, with branch cut along the negative real axis
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# File 'mruby/mrbgems/mruby-cmath/src/cmath.c', line 170
static mrb_value
cmath_log10(mrb_state *mrb, mrb_value self) {
mrb_value z = mrb_get_arg1(mrb);
mrb_float real, imag;
if (cmath_get_complex(mrb, z, &real, &imag) || real < 0.0) {
mrb_complex c = CX(real,imag);
c = CXDIVf(FC(log)(c),log(10));
return mrb_complex_new(mrb, creal(c), cimag(c));
}
return mrb_float_value(mrb, F(log10)(real));
}
|
.log2 ⇒ Object
log2(z): return the base-2 logarithm of z, with branch cut along the negative real axis
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# File 'mruby/mrbgems/mruby-cmath/src/cmath.c', line 183
static mrb_value
cmath_log2(mrb_state *mrb, mrb_value self) {
mrb_value z = mrb_get_arg1(mrb);
mrb_float real, imag;
if (cmath_get_complex(mrb, z, &real, &imag) || real < 0.0) {
mrb_complex c = CX(real,imag);
c = CXDIVf(FC(log)(c),log(2.0));
return mrb_complex_new(mrb, creal(c), cimag(c));
}
return mrb_float_value(mrb, F(log2)(real));
}
|
.sin ⇒ Object
.sinh ⇒ Object
.sqrt ⇒ Object
sqrt(z): return square root of z
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# File 'mruby/mrbgems/mruby-cmath/src/cmath.c', line 196
static mrb_value
cmath_sqrt(mrb_state *mrb, mrb_value self) {
mrb_value z = mrb_get_arg1(mrb);
mrb_float real, imag;
if (cmath_get_complex(mrb, z, &real, &imag) || real < 0.0) {
mrb_complex c = CX(real,imag);
c = FC(sqrt)(c);
return mrb_complex_new(mrb, creal(c), cimag(c));
}
return mrb_float_value(mrb, F(sqrt)(real));
}
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