author | sheepluva |
Sun, 01 Mar 2015 16:38:18 +0100 | |
changeset 10840 | 6d1986411733 |
parent 8047 | 25a4daa6473c |
child 14190 | 801dc57371c3 |
permissions | -rw-r--r-- |
7983 | 1 |
#include "pmath.h" |
8047
25a4daa6473c
cleanup headers, remove -I . from rtl lib to save a few warnings
koda
parents:
7983
diff
changeset
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#include <stdlib.h> |
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#include <math.h> |
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/* |
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* power raises base to the power power. |
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* This is equivalent to exp(power*ln(base)). Therefore base should be non-negative. |
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*/ |
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float fpcrtl_power(float base, float exponent) |
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{ |
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return exp(exponent * log(base)); |
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} |
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/* Currently the games only uses sign of an integer */ |
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int fpcrtl_signi(int x) |
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{ |
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if(x > 0){ |
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return 1; |
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} |
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else if(x < 0){ |
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return -1; |
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} |
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else{ |
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return 0; |
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} |
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} |
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float fpcrtl_csc(float x) |
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{ |
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return 1 / sin(x); |
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} |
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float __attribute__((overloadable)) fpcrtl_abs(float x) |
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{ |
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return fabs(x); |
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} |
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double __attribute__((overloadable)) fpcrtl_abs(double x) |
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{ |
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return fabs(x); |
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} |
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int __attribute__((overloadable)) fpcrtl_abs(int x) |
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{ |
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return abs(x); |
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} |
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int64_t __attribute__((overloadable)) fpcrtl_abs(int64_t x) |
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{ |
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return x < 0 ? -x : x; |
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} |