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 30590-f14e077362) Lines: 1467 1530 95.9 % Date: 2026-01-01 09:21:12 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296169
RgX_gtofp_bit	7029063
RgX_normalize1	35733
X2XP1	5989638
ZX_Uspensky	1313684
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15194
ZX_graeffe	5390
ZX_realroots_irred	48552
ZX_rescale2prim	2233498
ZX_sturm	6395
ZX_sturm_i	122967
ZX_sturm_irred	116572
ZX_sturmpart	1128200
ZX_to_ZiX	16448270
ZiX_sqr	99010401
_gen_nored	11197209
_gen_one	14468909
_gen_zero	325924
_intervalcmp	0
_mp_add	24658661
_mp_cmul	34756198
_mp_mul	4374391
_mp_sqr	6297774
_mp_sub	0
_sqrtnr	22586
a_posteriori_errors	536978
abs_update	8003326
abs_update_r	778533
all_roots	535876
append_clone	1613499
bkeval_single_power	5234116
check_ab	1178827
checkbound	2354784
checkvalidpol	266892
clean_roots	535924
cleanroots	231763
cmp_complex_appr	2237241
conformal_basecase	1403476
conformal_mapping	467787
conformal_pol	1403596
dblexp	6547202
dbllog2	302022736
dft	502230
dual_modulus	1012180
eval_rel_pol	13134225
fft	14154912
fft2	7462
findpower	40944691
fix_roots	536979
fix_roots1	398353
fujiwara_bound	2270946
fujiwara_bound_real	1406648
graeffe	49493190
homothetie	1609607
homothetie2n	9954447
homothetie_gauss	36487477
ind_maxlog2	902417
initdft	996072
isexactpol	239753
isexactscalar	931714
isreal	961625
isvalidcoeff	1228149
logmax_modulus	4449449
logmin_modulus	1614344
logmodulus	606551
logpre_modulus	606544
logradius	493835
lower_bound	40945156
mydbllog2i	226369123
mydbllog2r	56169713
mydbllogr	9544305
mygprec	63740428
mygprec_absolute	4337453
mygprec_special	536985
mygprecrc	215118105
mygprecrc_special	2178278
myshiftic	135773560
myshiftrc	35495510
newton_polygon	5505261
optimize_split	493842
parameters	493841
pol_to_gaussint	17583687
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166678
quicktofp	6976614
realroots	50627
refine_F	502227
refine_H	2459914
root_error	1911614
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288157
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494203
split_0_1	468149
split_0_2	468149
split_1	467785
split_2	493841
split_complete	1525380
split_fromU	493841
split_pols	166674
splitcauchy	166690
splitpoleval	5234228
tocomplex	1213169
update_radius	493841
usp	1125900

Generated by: LCOV version 1.16