| 2ee739cc |
1 | #pragma force_top_level |
| 2 | #pragma include_only_once |
| 3 | |
| 4 | /* math.h: ANSI 'C' (X3J11 Oct 88) library header, section 4.5 */ |
| 5 | /* Copyright (C) Codemist Ltd. */ |
| 6 | /* Copyright (C) Acorn Computers Ltd. 1991 */ |
| 7 | /* version 0.02 */ |
| 8 | |
| 9 | #ifndef __math_h |
| 10 | #define __math_h |
| 11 | |
| 12 | #ifndef HUGE_VAL |
| 13 | #define HUGE_VAL __huge_val |
| 14 | |
| 15 | #ifdef __cplusplus |
| 16 | #define HUGE __huge_val |
| 17 | extern "C" { |
| 18 | #endif |
| 19 | |
| 20 | #ifdef _DLL |
| 21 | extern const double *_dll_huge_val(void); |
| 22 | #define __huge_val (*_dll_huge_val()) |
| 23 | #else |
| 24 | extern const double __huge_val; |
| 25 | #endif |
| 26 | |
| 27 | #ifdef __cplusplus |
| 28 | } |
| 29 | #endif |
| 30 | |
| 31 | #endif |
| 32 | |
| 33 | #pragma no_side_effects |
| 34 | |
| 35 | #ifdef __cplusplus |
| 36 | extern "C" { |
| 37 | #endif |
| 38 | extern double acos(double /*x*/); |
| 39 | /* computes the principal value of the arc cosine of x */ |
| 40 | /* a domain error occurs for arguments not in the range -1 to 1 */ |
| 41 | /* Returns: the arc cosine in the range 0 to Pi. */ |
| 42 | extern double asin(double /*x*/); |
| 43 | /* computes the principal value of the arc sine of x */ |
| 44 | /* a domain error occurs for arguments not in the range -1 to 1 */ |
| 45 | /* and -HUGE_VAL is returned. */ |
| 46 | /* Returns: the arc sine in the range -Pi/2 to Pi/2. */ |
| 47 | extern double atan(double /*x*/); |
| 48 | /* computes the principal value of the arc tangent of x */ |
| 49 | /* Returns: the arc tangent in the range -Pi/2 to Pi/2. */ |
| 50 | extern double atan2(double /*x*/, double /*y*/); |
| 51 | /* computes the principal value of the arc tangent of y/x, using the */ |
| 52 | /* signs of both arguments to determine the quadrant of the return value */ |
| 53 | /* a domain error occurs if both args are zero, and -HUGE_VAL returned. */ |
| 54 | /* Returns: the arc tangent of y/x, in the range -Pi to Pi. */ |
| 55 | |
| 56 | extern double __d_atan(double); |
| 57 | #define atan(x) __d_atan(x) |
| 58 | |
| 59 | extern double cos(double /*x*/); |
| 60 | /* computes the cosine of x (measured in radians). A large magnitude */ |
| 61 | /* argument may yield a result with little or no significance */ |
| 62 | /* Returns: the cosine value. */ |
| 63 | extern double sin(double /*x*/); |
| 64 | /* computes the sine of x (measured in radians). A large magnitude */ |
| 65 | /* argument may yield a result with little or no significance */ |
| 66 | /* Returns: the sine value. */ |
| 67 | |
| 68 | extern double __d_sin(double); |
| 69 | extern double __d_cos(double); |
| 70 | #define sin(x) __d_sin(x) |
| 71 | #define cos(x) __d_cos(x) |
| 72 | |
| 73 | extern double tan(double /*x*/); |
| 74 | /* computes the tangent of x (measured in radians). A large magnitude */ |
| 75 | /* argument may yield a result with little or no significance */ |
| 76 | /* Returns: the tangent value. */ |
| 77 | /* if range error; returns HUGE_VAL. */ |
| 78 | |
| 79 | extern double cosh(double /*x*/); |
| 80 | /* computes the hyperbolic cosine of x. A range error occurs if the */ |
| 81 | /* magnitude of x is too large. */ |
| 82 | /* Returns: the hyperbolic cosine value. */ |
| 83 | /* if range error; returns HUGE_VAL. */ |
| 84 | extern double sinh(double /*x*/); |
| 85 | /* computes the hyperbolic sine of x. A range error occurs if the */ |
| 86 | /* magnitude of x is too large. */ |
| 87 | /* Returns: the hyperbolic sine value. */ |
| 88 | /* if range error; returns -HUGE_VAL or HUGE_VAL depending */ |
| 89 | /* on the sign of the argument */ |
| 90 | extern double tanh(double /*x*/); |
| 91 | /* computes the hyperbolic tangent of x. */ |
| 92 | /* Returns: the hyperbolic tangent value. */ |
| 93 | |
| 94 | extern double exp(double /*x*/); |
| 95 | /* computes the exponential function of x. A range error occurs if the */ |
| 96 | /* magnitude of x is too large. */ |
| 97 | /* Returns: the exponential value. */ |
| 98 | /* if underflow range error; 0 is returned. */ |
| 99 | /* if overflow range error; HUGE_VAL is returned. */ |
| 100 | extern double frexp(double /*value*/, int * /*exp*/); |
| 101 | /* breaks a floating-point number into a normalised fraction and an */ |
| 102 | /* integral power of 2. It stores the integer in the int object pointed */ |
| 103 | /* to by exp. */ |
| 104 | /* Returns: the value x, such that x is a double with magnitude in the */ |
| 105 | /* interval 0.5 to 1.0 or zero, and value equals x times 2 raised to the */ |
| 106 | /* power *exp. If value is zero, both parts of the result are zero. */ |
| 107 | extern double ldexp(double /*x*/, int /*exp*/); |
| 108 | /* multiplies a floating-point number by an integral power of 2. */ |
| 109 | /* A range error may occur. */ |
| 110 | /* Returns: the value of x times 2 raised to the power of exp. */ |
| 111 | /* if range error; HUGE_VAL is returned. */ |
| 112 | extern double log(double /*x*/); |
| 113 | /* computes the natural logarithm of x. A domain error occurs if the */ |
| 114 | /* argument is negative, and -HUGE_VAL is returned. A range error occurs */ |
| 115 | /* if the argument is zero. */ |
| 116 | /* Returns: the natural logarithm. */ |
| 117 | /* if range error; -HUGE_VAL is returned. */ |
| 118 | extern double log10(double /*x*/); |
| 119 | /* computes the base-ten logarithm of x. A domain error occurs if the */ |
| 120 | /* argument is negative. A range error occurs if the argument is zero. */ |
| 121 | /* Returns: the base-ten logarithm. */ |
| 122 | extern double modf(double /*value*/, double * /*iptr*/); |
| 123 | /* breaks the argument value into integral and fraction parts, each of */ |
| 124 | /* which has the same sign as the argument. It stores the integral part */ |
| 125 | /* as a double in the object pointed to by iptr. */ |
| 126 | /* Returns: the signed fractional part of value. */ |
| 127 | |
| 128 | extern double pow(double /*x*/, double /*y*/); |
| 129 | /* computes x raised to the power of y. A domain error occurs if x is */ |
| 130 | /* zero and y is less than or equal to zero, or if x is negative and y */ |
| 131 | /* is not an integer, and -HUGE_VAL returned. A range error may occur. */ |
| 132 | /* Returns: the value of x raised to the power of y. */ |
| 133 | /* if underflow range error; 0 is returned. */ |
| 134 | /* if overflow range error; HUGE_VAL is returned. */ |
| 135 | extern double sqrt(double /*x*/); |
| 136 | /* computes the non-negative square root of x. A domain error occurs */ |
| 137 | /* if the argument is negative, and -HUGE_VAL returned. */ |
| 138 | /* Returns: the value of the square root. */ |
| 139 | |
| 140 | extern double ceil(double /*x*/); |
| 141 | /* computes the smallest integer not less than x. */ |
| 142 | /* Returns: the smallest integer not less than x, expressed as a double. */ |
| 143 | extern double fabs(double /*x*/); |
| 144 | /* computes the absolute value of the floating-point number x. */ |
| 145 | /* Returns: the absolute value of x. */ |
| 146 | extern double floor(double /*d*/); |
| 147 | /* computes the largest integer not greater than x. */ |
| 148 | /* Returns: the largest integer not greater than x, expressed as a double */ |
| 149 | extern double fmod(double /*x*/, double /*y*/); |
| 150 | /* computes the floating-point remainder of x/y. */ |
| 151 | /* Returns: the value x - i * y, for some integer i such that, if y is */ |
| 152 | /* nonzero, the result has the same sign as x and magnitude */ |
| 153 | /* less than the magnitude of y. If y is zero, a domain error */ |
| 154 | /* occurs and -HUGE_VAL is returned. */ |
| 155 | |
| 156 | extern double __d_abs(double); |
| 157 | #define fabs(x) __d_abs(x) |
| 158 | |
| 159 | #ifdef __cplusplus |
| 160 | } |
| 161 | #endif |
| 162 | |
| 163 | #pragma side_effects |
| 164 | |
| 165 | #endif |
| 166 | |
| 167 | /* end of math.h */ |
~mdw / ssr / blame