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320da2296d
Old structure: put everything in lib/include New structure: put library includes in their respective library folder. e.g. lib/NitroDWC/include/dwc.h
112 lines
2.2 KiB
C
112 lines
2.2 KiB
C
#ifndef NITRO_MATH_MATH_H_
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#define NITRO_MATH_MATH_H_
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#include <nitro/misc.h>
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#include <nitro/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MATH_ABS(a) (((a) < 0) ? (-(a)) : (a))
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SDK_INLINE int MATH_IAbs (int a)
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{
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return (a < 0) ? -a : a;
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}
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#define MATH_CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
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#define MATH_MIN(a, b) (((a) <= (b)) ? (a) : (b))
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SDK_INLINE int MATH_IMin (int a, int b)
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{
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return (a <= b) ? a : b;
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}
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#define MATH_MAX(a, b) (((a) >= (b)) ? (a) : (b))
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SDK_INLINE int MATH_IMax (int a, int b)
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{
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return (a >= b) ? a : b;
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}
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#define MATH_ROUNDUP(x, base) (((x) + ((base) - 1)) & ~((base) - 1))
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#define MATH_ROUNDDOWN(x, base) ((x) & ~((base) - 1))
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#define MATH_ROUNDUP32(x) MATH_ROUNDUP(x, 32)
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#define MATH_ROUNDDOWN32(x) MATH_ROUNDDOWN(x, 32)
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u32 MATH_CountLeadingZerosFunc(u32 x);
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#if !defined(PLATFORM_INTRINSIC_FUNCTION_BIT_CLZ32)
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#ifdef SDK_ARM9
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#if defined(SDK_CW) || defined(__MWERKS__)
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#pragma thumb off
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SDK_INLINE u32 MATH_CountLeadingZerosInline (u32 x)
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{
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asm
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{
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clz x, x
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}
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return x;
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}
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#pragma thumb reset
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#elif defined(SDK_ADS)
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TO BE DEFINED
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#elif defined(SDK_GCC)
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TO BE DEFINED
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#endif
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#endif
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#endif
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#ifndef MATH_CountLeadingZeros
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#if defined(PLATFORM_INTRINSIC_FUNCTION_BIT_CLZ32)
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#define MATH_CountLeadingZeros(x) PLATFORM_INTRINSIC_FUNCTION_BIT_CLZ32(x)
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#elif defined(SDK_ARM9) && defined(SDK_CODE_ARM)
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#define MATH_CountLeadingZeros(x) MATH_CountLeadingZerosInline(x)
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#else
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#define MATH_CountLeadingZeros(x) MATH_CountLeadingZerosFunc(x)
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#endif
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#endif
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#define MATH_CLZ(x) MATH_CountLeadingZeros(x)
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SDK_INLINE int MATH_ILog2 (u32 x)
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{
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return (int)(31 - MATH_CountLeadingZeros(x));
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}
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u8 MATH_CountPopulation(u32 x);
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SDK_INLINE u32 MATH_CountTrailingZeros (u32 x)
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{
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return (u32)(32 - MATH_CountLeadingZeros((u32)(~x & (x - 1))));
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}
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#define MATH_CTZ(x) MATH_CountTrailingZeros(x)
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SDK_INLINE u32 MATH_GetLeastSignificantBit (u32 x)
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{
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return (u32)(x & -(s32)x);
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}
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#define MATH_LSB(x) MATH_GetLeastSignificantBit(x)
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SDK_INLINE u32 MATH_GetMostSignificantBit (u32 x)
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{
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return (u32)(x & ((s32)0x80000000 >> MATH_CountLeadingZeros(x)));
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}
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#define MATH_MSB(x) MATH_GetMostSignificantBit(x)
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#ifdef __cplusplus
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}
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#endif
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#endif
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