Functions for math.
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file | math.h |
| Architecture-specific math function calls.
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long | ArchSign (long val) |
| Three-valued sign. Return 1 if val > 0, 0 if val == 0, or -1 if val < 0.
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uint32_t | ArchFloatToBitPattern (float v) |
| Returns The IEEE-754 bit pattern of the specified single precision value as a 32-bit unsigned integer.
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float | ArchBitPatternToFloat (uint32_t v) |
| Returns The single precision floating point value corresponding to the given IEEE-754 bit pattern.
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uint64_t | ArchDoubleToBitPattern (double v) |
| Returns The IEEE-754 bit pattern of the specified double precision value as a 64-bit unsigned integer.
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double | ArchBitPatternToDouble (uint64_t v) |
| Returns The double precision floating point value corresponding to the given IEEE-754 bit pattern.
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void | ArchSinCosf (float v, float *s, float *c) |
| Computes the sine and cosine of the specified value as a float.
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void | ArchSinCos (double v, double *s, double *c) |
| Computes the sine and cosine of the specified value as a double.
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int | ArchCountTrailingZeros (uint64_t x) |
| Return the number of consecutive 0-bits in x starting from the least significant bit position.
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Functions for math.
◆ ARCH_MIN_FLOAT_EPS_SQR
#define ARCH_MIN_FLOAT_EPS_SQR 0.000244141F |
This is the smallest value e such that 1+e^2 == 1, using floats.
True for all IEEE754 chipsets.
Definition at line 36 of file math.h.
◆ ArchBitPatternToDouble()
double ArchBitPatternToDouble |
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uint64_t |
v | ) |
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inline |
Returns The double precision floating point value corresponding to the given IEEE-754 bit pattern.
Definition at line 78 of file math.h.
◆ ArchBitPatternToFloat()
float ArchBitPatternToFloat |
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uint32_t |
v | ) |
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inline |
Returns The single precision floating point value corresponding to the given IEEE-754 bit pattern.
Definition at line 56 of file math.h.
◆ ArchCountTrailingZeros()
int ArchCountTrailingZeros |
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uint64_t |
x | ) |
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inline |
Return the number of consecutive 0-bits in x
starting from the least significant bit position.
If x
is 0, the result is undefined.
Definition at line 118 of file math.h.
◆ ArchDoubleToBitPattern()
uint64_t ArchDoubleToBitPattern |
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double |
v | ) |
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inline |
Returns The IEEE-754 bit pattern of the specified double precision value as a 64-bit unsigned integer.
Definition at line 67 of file math.h.
◆ ArchFloatToBitPattern()
uint32_t ArchFloatToBitPattern |
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float |
v | ) |
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inline |
Returns The IEEE-754 bit pattern of the specified single precision value as a 32-bit unsigned integer.
Definition at line 45 of file math.h.
◆ ArchSign()
long ArchSign |
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long |
val | ) |
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inline |
Three-valued sign. Return 1 if val > 0, 0 if val == 0, or -1 if val < 0.
Definition at line 39 of file math.h.
◆ ArchSinCos()
void ArchSinCos |
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double |
v, |
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double * |
s, |
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double * |
c |
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inline |
Computes the sine and cosine of the specified value as a double.
Definition at line 97 of file math.h.
◆ ArchSinCosf()
void ArchSinCosf |
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float |
v, |
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float * |
s, |
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float * |
c |
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) |
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inline |
Computes the sine and cosine of the specified value as a float.
Definition at line 94 of file math.h.