Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30499-74bdd0ac5b) Lines: 1468 1530 95.9 % Date: 2025-09-18 09:23:44 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296411
RgX_gtofp_bit	7031074
RgX_normalize1	35885
X2XP1	5990361
ZX_Uspensky	1313857
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48653
ZX_rescale2prim	2233749
ZX_sturm	6395
ZX_sturm_i	123168
ZX_sturm_irred	116773
ZX_sturmpart	1128212
ZX_to_ZiX	16456259
ZiX_sqr	99035006
_gen_nored	11200672
_gen_one	14474066
_gen_zero	326164
_intervalcmp	0
_mp_add	24662599
_mp_cmul	34763004
_mp_mul	4374536
_mp_sqr	6298298
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537152
abs_update	8004638
abs_update_r	778631
all_roots	536105
append_clone	1613947
bkeval_single_power	5236175
check_ab	1178840
checkbound	2354810
checkvalidpol	267044
clean_roots	536150
cleanroots	231749
cmp_complex_appr	2238490
conformal_basecase	1403807
conformal_mapping	467896
conformal_pol	1403926
dblexp	6548707
dbllog2	302684849
dft	502339
dual_modulus	1012409
eval_rel_pol	13137395
fft	14158461
fft2	7462
findpower	40955762
fix_roots	537154
fix_roots1	398396
fujiwara_bound	2271729
fujiwara_bound_real	1406889
graeffe	49506989
homothetie	1610007
homothetie2n	9957189
homothetie_gauss	36497981
ind_maxlog2	902627
initdft	996286
isexactpol	239739
isexactscalar	931700
isreal	961847
isvalidcoeff	1230089
logmax_modulus	4450728
logmin_modulus	1614751
logmodulus	606715
logpre_modulus	606714
logradius	493947
lower_bound	40955340
mydbllog2i	226418032
mydbllog2r	56768892
mydbllogr	9545805
mygprec	63752797
mygprec_absolute	4339337
mygprec_special	537156
mygprecrc	215174266
mygprecrc_special	2178466
myshiftic	135830878
myshiftrc	35505635
newton_polygon	5506818
optimize_split	493949
parameters	493947
pol_to_gaussint	17588233
polgraeffe	14
polmod_to_embed	84
polrootsbound	27298
polrootsbound_i	27291
polsolve	166724
quicktofp	6978933
realroots	50627
refine_F	502336
refine_H	2460291
root_error	1912334
roots	8018
roots_aux	239767
roots_com	239739
rootsdeg0	42
scalepol	4289133
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494273
split_0_1	468223
split_0_2	468223
split_1	467899
split_2	493946
split_complete	1525695
split_fromU	493948
split_pols	166712
splitcauchy	166729
splitpoleval	5236102
tocomplex	1213905
update_radius	493946
usp	1126039

Generated by: LCOV version 1.16